Which of the following scientists is credited with the development of the first successful polio vaccine? [#1300]

Jonas Salk developed the inactivated poliovirus vaccine (IPV) in 1955, which was the first effective vaccine against polio. Salk's vaccine led to a significant reduction in polio cases and paved the way for global efforts to eradicate the disease.

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Jonas Salk developed the inactivated poliovirus vaccine (IPV) in 1955, which was the first effective vaccine against polio. Salk's vaccine led to a significant reduction in polio cases and paved the way for global efforts to eradicate the disease.

Plate tectonics is the theory that the Earth's outer layer is divided into large plates that move relative to each other, creating and destroying landforms, oceans, and continents over millions of years.

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Plate tectonics is the theory that the Earth's outer layer is divided into large plates that move relative to each other, creating and destroying landforms, oceans, and continents over millions of years.

American agronomist Norman Borlaug is widely known as the "Father of the Green Revolution". He led initiatives that increased agricultural production worldwide. In 1970, he received the Nobel Peace Prize in recognition of his contributions to increasing food supply and world peace. His work is estimated to have saved over a billion people from starvation.

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American agronomist Norman Borlaug is widely known as the "Father of the Green Revolution". He led initiatives that increased agricultural production worldwide. In 1970, he received the Nobel Peace Prize in recognition of his contributions to increasing food supply and world peace. His work is estimated to have saved over a billion people from starvation.

A bisector is a line that divides a shape into two equal parts, like a line that cuts a triangle into two equal areas or a line that divides a circle into two equal parts (semi-circles).

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A bisector is a line that divides a shape into two equal parts, like a line that cuts a triangle into two equal areas or a line that divides a circle into two equal parts (semi-circles).

AGMARK is a certification mark for agricultural produce, assuring that they conform to a grade standard notified by Directorate of Marketing & Inspection (DMI), Department of Agriculture, Cooperation and Farmers Welfare, Ministry of Agriculture & Farmers Welfare under Agricultural Produce (Grading Marking) Act, 1937.

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AGMARK is a certification mark for agricultural produce, assuring that they conform to a grade standard notified by Directorate of Marketing & Inspection (DMI), Department of Agriculture, Cooperation and Farmers Welfare, Ministry of Agriculture & Farmers Welfare under Agricultural Produce (Grading Marking) Act, 1937.

Indonesia is the world's largest island country by area (1,904,569 sq km), and by total number of islands (17,504 islands). It is also the world's most populous island country, with a population of over 270 million (the fourth most populous country in the world, after India, China, and the United States).

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Indonesia is the world's largest island country by area (1,904,569 sq km), and by total number of islands (17,504 islands). It is also the world's most populous island country, with a population of over 270 million (the fourth most populous country in the world, after India, China, and the United States).

Margaret Hilda Thatcher was a British stateswoman and Conservative politician who served as Prime Minister of the United Kingdom from 1979 to 1990 and Leader of the Conservative Party from 1975 to 1990. She was the longest-serving British prime minister of the 20th century and the first woman to hold the position. As prime minister, she implemented economic policies known as Thatcherism. A Soviet journalist dubbed her the "Iron Lady", a nickname that became associated with her uncompromising politics and leadership style.

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Margaret Hilda Thatcher was a British stateswoman and Conservative politician who served as Prime Minister of the United Kingdom from 1979 to 1990 and Leader of the Conservative Party from 1975 to 1990. She was the longest-serving British prime minister of the 20th century and the first woman to hold the position. As prime minister, she implemented economic policies known as Thatcherism. A Soviet journalist dubbed her the "Iron Lady", a nickname that became associated with her uncompromising politics and leadership style.

The Indian Diamond Institute (IDI) is a Government of India sponsored autonomous higher school of learning in the fields of diamonds, gems and jewellery in India. The Institute is located in Surat, Gujarat, India and is 263 km away from Mumbai.

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The Indian Diamond Institute (IDI) is a Government of India sponsored autonomous higher school of learning in the fields of diamonds, gems and jewellery in India. The Institute is located in Surat, Gujarat, India and is 263 km away from Mumbai.

The building was designed by the British architects Sir Edwin Lutyens and Sir Herbert Baker in 1912–1913. The structure was built over a period of six years, starting in 1921 and culminating in 1927.

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The building was designed by the British architects Sir Edwin Lutyens and Sir Herbert Baker in 1912–1913. The structure was built over a period of six years, starting in 1921 and culminating in 1927.

The Present Perfect tense is used to describe an action that started in the past and continues up to the present moment, or an action that happened at an unspecified time in the past and has a connection to the present.

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The Present Perfect tense is used to describe an action that started in the past and continues up to the present moment, or an action that happened at an unspecified time in the past and has a connection to the present.

World Food Day is an international day celebrated every year worldwide on October 16 to commemorate the date of the founding of the United Nations Food and Agriculture Organization in 1945. World Food Day was first held on 16 Oct 1981.

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World Food Day is an international day celebrated every year worldwide on October 16 to commemorate the date of the founding of the United Nations Food and Agriculture Organization in 1945. World Food Day was first held on 16 Oct 1981.