So I don’t understand what answer do I pick!

Question

In this story called,
Out of this World.

The question: Think about what you read in “Out of this world.”
Which one of the following statement is true?
Answers:
A: Robotic arms are not useful.
B: Robotic arms are dangerous to use.
C: Robotic arms do all the work in space.
D: Robotic arms help keep astronauts safe.

I am not sure if I pick
C or D.
Please tell me I don’t wanna have low score!

Answer 1

well, I didn't read it, but robotic arms cannot do all the work needed.