Will mark brainliest in paragraph 1, the use of the words pathfinders and pioneers emphasizes the idea that space a. presents a difficult challenge. b. is far away. c. is largely unknown. d. is dangerous.

The answer is c because a pathfinder is someone who finds a way to get to something possibly unknown and a pioneer is someone who is the first or close to the first person to find something therefore the words would emphasize that the area is largely unknown. Hope this helps ;)

a no change

Explanation:

Becuase he didn´t move a lot.