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.

India first hosted the Commonwealth Games in 2010. The event, officially known as the XIX Commonwealth Games, was held in Delhi from October 3–14, 2010. It was the first time the Games were held in a Commonwealth republic and only the second time in Asia, after Kuala Lumpur in 1998.

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India first hosted the Commonwealth Games in 2010. The event, officially known as the XIX Commonwealth Games, was held in Delhi from October 3–14, 2010. It was the first time the Games were held in a Commonwealth republic and only the second time in Asia, after Kuala Lumpur in 1998.

Goecha La pass is located in the Gyalshing district of Sikkim, India, at an altitude of 16,207 ft (4,940 m) in the Himalayan range. The pass is close to the Nepal border and offers views of the southeast face of Kanchenjunga, the world's third highest mountain. It's also a base camp for people who want to climb the mountain.

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Goecha La pass is located in the Gyalshing district of Sikkim, India, at an altitude of 16,207 ft (4,940 m) in the Himalayan range. The pass is close to the Nepal border and offers views of the southeast face of Kanchenjunga, the world's third highest mountain. It's also a base camp for people who want to climb the mountain.

The headquarters of the bank is at 6 ADB Avenue, Mandaluyong, Metro Manila, Philippines, and it has 42 field offices in Asia and the Pacific and representative offices in Washington, Frankfurt, Tokyo and Sydney.

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The headquarters of the bank is at 6 ADB Avenue, Mandaluyong, Metro Manila, Philippines, and it has 42 field offices in Asia and the Pacific and representative offices in Washington, Frankfurt, Tokyo and Sydney.

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.

The sum of the interior angles of a triangle is always 180 degrees, a fundamental principle in geometry.

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The sum of the interior angles of a triangle is always 180 degrees, a fundamental principle in geometry.

Rashtriya Ekta Diwas, or National Unity Day, is observed on 31st October every year in India. It was introduced by the Government of India in 2014. The day is celebrated to mark the birth anniversary of Vallabhbhai Patel who had a major role in the political integration of India.

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Rashtriya Ekta Diwas, or National Unity Day, is observed on 31st October every year in India. It was introduced by the Government of India in 2014. The day is celebrated to mark the birth anniversary of Vallabhbhai Patel who had a major role in the political integration of India.

The Elephanta Caves, a UNESCO World Heritage Site, are primarily dedicated to the Hindu god Shiva. The main cave is famous for its carvings depicting Shiva in various forms and actions. The caves are located on Elephanta Island, also known as Gharapuri, in Mumbai Harbour.

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The Elephanta Caves, a UNESCO World Heritage Site, are primarily dedicated to the Hindu god Shiva. The main cave is famous for its carvings depicting Shiva in various forms and actions. The caves are located on Elephanta Island, also known as Gharapuri, in Mumbai Harbour.

The Kamarupa Kingdom was an ancient kingdom that ruled Assam from the 4th to the 12th century. Its capital city, Pragjyotishpura, was said to be the epicenter of the kingdom's power and culture. King Bhagadatta, who ruled Kamarupa, was a legendary figure who fought on the side of the Kauravas in the Mahabharata war.

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The Kamarupa Kingdom was an ancient kingdom that ruled Assam from the 4th to the 12th century. Its capital city, Pragjyotishpura, was said to be the epicenter of the kingdom's power and culture. King Bhagadatta, who ruled Kamarupa, was a legendary figure who fought on the side of the Kauravas in the Mahabharata war.

Knockdown and Knockout are the terminology of boxing. A knockdown happens when a boxer tumbles to the ground of the boxing ring as a result of a blow from the rival. A knockout is an automatic win for the opponent, and refers to a player being knocked down for more than 10 seconds. The referee will start counting down from 10 once a player has been knocked down, and the player has to regain his position in order to continue the round.

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Knockdown and Knockout are the terminology of boxing. A knockdown happens when a boxer tumbles to the ground of the boxing ring as a result of a blow from the rival. A knockout is an automatic win for the opponent, and refers to a player being knocked down for more than 10 seconds. The referee will start counting down from 10 once a player has been knocked down, and the player has to regain his position in order to continue the round.

Isaac Newton is widely credited with the discovery of gravity and formulated the laws of motion that bear his name.

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Isaac Newton is widely credited with the discovery of gravity and formulated the laws of motion that bear his name.