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.

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).

The chemical symbol for gold is Au, which comes from the Latin word "aurum," meaning "shining dawn" or "glowing dawn."

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The chemical symbol for gold is Au, which comes from the Latin word "aurum," meaning "shining dawn" or "glowing dawn."

Recombination marks the point when the universe had cooled enough for electrons and protons to combine into neutral atoms, allowing photons to travel freely through space without being scattered by charged particles. This event, also known as the "era of recombination," occurred about 380,000 years after the Big Bang.

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Recombination marks the point when the universe had cooled enough for electrons and protons to combine into neutral atoms, allowing photons to travel freely through space without being scattered by charged particles. This event, also known as the "era of recombination," occurred about 380,000 years after the Big Bang.

Neptune, with an average distance of about 4.5 billion kilometers (2.8 billion miles), is the farthest planet from the Sun. Note: Pluto was previously considered a planet but is now classified as a dwarf planet.

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Neptune, with an average distance of about 4.5 billion kilometers (2.8 billion miles), is the farthest planet from the Sun. Note: Pluto was previously considered a planet but is now classified as a dwarf planet.

Copenhagen is the capital and most populous city of Denmark.

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Copenhagen is the capital and most populous city of Denmark.

The Chenab and Jhelum rivers are both tributaries of the Indus River. The Indus River originates in the glaciers of the Kailash range near Mount Kailash and Lake Mansarovar in Tibet. It flows west and drains into the Arabian Sea. The total length of the Indus River is around 2,880 km, with 710 km flowing through India.

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The Chenab and Jhelum rivers are both tributaries of the Indus River. The Indus River originates in the glaciers of the Kailash range near Mount Kailash and Lake Mansarovar in Tibet. It flows west and drains into the Arabian Sea. The total length of the Indus River is around 2,880 km, with 710 km flowing through India.

Venus is the hottest planet in our solar system, with surface temperatures reaching as high as 462°C (863°F).

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Venus is the hottest planet in our solar system, with surface temperatures reaching as high as 462°C (863°F).

Godaan is a famous Hindi novel by Munshi Premchand. It was first published in 1936 and is considered one of the greatest Hindi novels of modern Indian literature.

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Godaan is a famous Hindi novel by Munshi Premchand. It was first published in 1936 and is considered one of the greatest Hindi novels of modern Indian literature.

International Literacy Day (ILD) is celebrated on September 8th every year by the United Nations Educational, Scientific and Cultural Organization (UNESCO) and most of its member countries. The day was proclaimed in 1966 to remind the international community of the importance of literacy for individuals, policy makers, and practitioners. It also serves as an opportunity for governments and international organizations to promote literacy.

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International Literacy Day (ILD) is celebrated on September 8th every year by the United Nations Educational, Scientific and Cultural Organization (UNESCO) and most of its member countries. The day was proclaimed in 1966 to remind the international community of the importance of literacy for individuals, policy makers, and practitioners. It also serves as an opportunity for governments and international organizations to promote literacy.

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.