No, you don't because it is not a compound sentence.
Its b.
Cause it is. and how would you if it was wrong.HAHAHA
Answer:
B is the answer
Explanation:
Infinite mean endless here is an example
The night sky was filled with an infinity of stars.
Never ending is also similar to infinity but is used in diffrent ways like this
The class felt like it was never ending.
I hope this helps :D
also brainliest plz?