The section "Polio Mysteries" helps readers understand * 14 points A. How polio can be treated. B. What causes polio. C. How polio affected people in America. D. Why polio is so contagious.

Option C

Explanation:

Polio mystery section deals with the issue of “How polio affected people in America”. It was during the 1951, when there was no medicine for polio and it was affecting the unvaccinated children leading to rise of endemic. Prior to advent of medicine in 1955, it was determined that paediatric injections could had incited polio infection, thereby leading to paralysis.

Hence, option C is correct

when reagan refers to freedom in this passage, he uses repetition as a rhetorical device. repetition is when the same words or phrases are repeated few times to make an idea stronger and more unforgettable. in this case, when he talks about freedom, he starts the sentence whit this word followed by a verb in present simple and after an advantage of being free.

explanation:

the complete subject is

lorna