D. They both examine humankind’s place in relation to the larger universe.
Asteroids offer a source of volatiles and an extraordinarily rich supply of minerals that can be exploited for the exploration and colonization of our solar system in the twenty-first century. Asteroids represent the bits and pieces left over from the process that formed the inner planets, including Earth.
some antonyms for corageous would be cowardly and timid
The right answer is alternative four.
In the excerpt from "A Relay Race to Remember," the expression "he was gliding through the water like a dolphin" injects surprise into the story by making a comparison between that conveys how well Sean performs in he race. The phrase describes that Sean swims as well as a dolphin, meaning that he executes brilliantly at the race.
The rest of the options are not correct because the remark does not develop Malik's character or depicts how he swims, and it is not the end of the story.