Answer:
A. Change there to their.
Explanation:
The (there) used in the sentence represents a place, (their) means it belongs to or is a fellow theirs.
Here is a list of words:
-intrepid
-courageous
-brave
-impulsive
-audacious
Personally, I would phrase it like this:
The choir moved the audience to tears with their beautiful voices.
I think the third one is probably the answer (?)