Multiple choice

Polio vaccine was developed by

  1. J.M. Salk

  2. J. Salk

  3. T.S. Salk

  4. Albert Sabin
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Jonas Salk developed the inactivated polio vaccine (IPV) in 1955. While the option lists 'J. Salk,' his full name was Jonas Salk, so this refers to the same person. Albert Sabin developed the oral polio vaccine (OPV) later.

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