What is your question about the excerpt?
I think the right answer is C. Have a nice day! Hope this helped.
The stargazers are lying on the ground on their backs who are tired from looking through the eyepiece of the telescope. One gazer stands up and takes a peek again at the eyepiece which is small and black. He sees something and calls out to his friends. "I found it," he said. They look at each other without saying anything.
The answer is A
It’s the only option that tells us the words not friendly to help give a hint what hostile. Plus all the other options use examples or similar words or things to describe it