Question

who developed the first effective polio vaccine and refused to patent it so that as many children as possible could get it quickly?
enrico fermi
jonas salk
albert einstein
charles richard drew

Explanation:

Jonas Salk developed the first - effective polio vaccine and chose not to patent it for the greater good of public health, aiming to make it accessible to as many children as possible quickly. Enrico Fermi was a physicist known for work in nuclear physics. Albert Einstein was a physicist famous for his theories of relativity. Charles Richard Drew made contributions to blood transfusion research.

Answer:

B. Jonas Salk