1. “The man who views the world at fifty the same as he did at twenty,” remarked the boxer Mahommad Ali, “has wasted thirty years of his life.” [Even better, put the attribution at the beginning, and run the entire quotation together.]

the autor of the text is bringing the point that one achievment of the president john f. kennedy was a success and this caused the next president to use a similar idea. the purposefor the use of the quotation in the text is to support the idea that peace corps was a result of the president's call. in this case, the quotation is presented as part of the writing and does not stand on its own.

answer a.

it is grammatically incorrect and is illegible to me and i can not answer it.

the rigid outer part of the earth, consisting of the crust and upper mantle is the lithosphere.     answer   crust and outer part of the mantle.

answer: b

explanation: i have never watched or read about him but looked it up and it seems the most sensible answer. sorry if it's wrong. ☺