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.

International Olympic Day is annually observed across the globe on 23 June to promote participation and peace in sports across the globe regardless of age, gender, or athletic ability.

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International Olympic Day is annually observed across the globe on 23 June to promote participation and peace in sports across the globe regardless of age, gender, or athletic ability.

The Chail Cricket Ground in Himachal Pradesh is the highest cricket ground in the world, sitting at 2,444 meters (7,500 feet) above sea level. Built in 1893 by the Maharaja of Patiala, Bhupinder Singh, the ground is also used for polo.

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The Chail Cricket Ground in Himachal Pradesh is the highest cricket ground in the world, sitting at 2,444 meters (7,500 feet) above sea level. Built in 1893 by the Maharaja of Patiala, Bhupinder Singh, the ground is also used for polo.

Myanmar is formerly known as Burma, and its official currency is called the Myanmar Kyat (MMK). The kyat was initially derived from the ancient Burmese unit of measurement known as the kyattha, which was equivalent to 16.3 grammes of silver. One kyat is equal to one hundred pyas (also written as pyat).

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Myanmar is formerly known as Burma, and its official currency is called the Myanmar Kyat (MMK). The kyat was initially derived from the ancient Burmese unit of measurement known as the kyattha, which was equivalent to 16.3 grammes of silver. One kyat is equal to one hundred pyas (also written as pyat).

Kanai-Boroxiboa is an archaeological site in Assam that is famous for its ancient stone sculptures and inscriptions. It is believed to be the ancient capital of the Salasthambha Kingdom and dates back to the 4th century AD.

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Kanai-Boroxiboa is an archaeological site in Assam that is famous for its ancient stone sculptures and inscriptions. It is believed to be the ancient capital of the Salasthambha Kingdom and dates back to the 4th century AD.

The National Flag of India was designed by Pingali Venkayya in 1921. It was a tricolour Flag with Saffron, White, and Green, with the Ashok Chakra at the centre. The National Flag was adopted on 22nd July 1947.

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The National Flag of India was designed by Pingali Venkayya in 1921. It was a tricolour Flag with Saffron, White, and Green, with the Ashok Chakra at the centre. The National Flag was adopted on 22nd July 1947.

The operation that led to the death of Osama bin Laden was called Operation Neptune Spear. The operation was carried out by US Navy SEALs of SEAL Team Six on May 2, 2011, in Abbottabad, Pakistan. Bin Laden was the founder and leader of the Islamist militant group al-Qaeda.

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The operation that led to the death of Osama bin Laden was called Operation Neptune Spear. The operation was carried out by US Navy SEALs of SEAL Team Six on May 2, 2011, in Abbottabad, Pakistan. Bin Laden was the founder and leader of the Islamist militant group al-Qaeda.

Interrogative sentences are used to ask questions or seek information, and typically begin with a question word like "who", "what", "where", "when", or "how".

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Interrogative sentences are used to ask questions or seek information, and typically begin with a question word like "who", "what", "where", "when", or "how".

Chandrayaan-1 was India's first lunar probe and deep space mission, launched by the Indian Space Research Organization (ISRO) on October 22, 2008. The spacecraft orbited the moon at a height of 100 km from the lunar surface until August 2009, mapping the moon's chemical, mineralogical, and photogeologic properties. The mission also included an impactor and a landing craft with a small solar-powered rover called Pragyan, which collected data on the moon's surface.

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Chandrayaan-1 was India's first lunar probe and deep space mission, launched by the Indian Space Research Organization (ISRO) on October 22, 2008. The spacecraft orbited the moon at a height of 100 km from the lunar surface until August 2009, mapping the moon's chemical, mineralogical, and photogeologic properties. The mission also included an impactor and a landing craft with a small solar-powered rover called Pragyan, which collected data on the moon's surface.

Modal auxiliary verbs, also called modal verbs, are a type of auxiliary verb that express modality, such as possibility, necessity, or obligation. Examples include "can", "could", "may", "might", "shall", "should", "will", and "would".

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Modal auxiliary verbs, also called modal verbs, are a type of auxiliary verb that express modality, such as possibility, necessity, or obligation. Examples include "can", "could", "may", "might", "shall", "should", "will", and "would".

Athens, Greece is credited with the development of democracy, where citizens had the power to participate in government decisions.

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Athens, Greece is credited with the development of democracy, where citizens had the power to participate in government decisions.