Multiple choice

Which best describes the significance of Jonas Salk?

  1. created a vaccine for polio

  2. discovered a cure for AIDS

  3. discovered a cure for cancer

  4. created a vaccine for smallpox
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Jonas Salk developed the first successful polio vaccine in the 1950s, which significantly reduced the incidence of the disease.

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