What are two ways that the information in the section titled "an unexpected effect" influences the passage as a whole?

1which is an example of a claim? a . . never give up on a goal or dream just because someone tells you it’s impossible. b people said no one could scale mount everest, but in 1953, sir edmund hilary and tenzing norgay gazed down upon the world from its summit. c a rude remark is like a piece of litter in a national park—the best thing to do is throw it in the garbage where it belongs. d 1903, orville and wilbur wright made the first sustained powered flight in a heavier-than-air machine. review the sentence. actually, we the chair in spain about 20 years ago. 2 which correctly completes the sentence? actually, we the chair in spain about 20 years ago. buy buyed bought boughten