What is the meaning of this metaphor from lines 115-116: "every valley shall be exalted, and every hill and mountain shall be made low"?

Plz asap read this sentence from paragraph 3 of the article. the boys and girls are merely asked to obtain the signatures of ten friends or relatives. how does the word "merely" affect the meaning of the sentence? a- it suggests that asking people to subscribe to the washington times is something negative. b- it implies that obtaining ten signatures is not a requirement for receiving a prize. c- it downplays the fact that to win the prize, children must ask people to subscribe to the washington times. d- it emphasizes that children receive the prize only if they obtain ten signatures.

What are the authors purposes in writing its our world too young people who are making a difference

Simple subject mary will start the race in ten minutes