Jonas Salk<span> </span><span>was an American </span>medical researcher<span> and </span>virologist<span>. He discovered and developed one of the first successful </span>polio vaccines in the 1950's.
Hope I helped. :)
The answer is b they were from ohio but flew in north carolina
In the diagram, point O is the center of the circle and AC and BD intersect at point E. My sister had this same question
