[Q]: How does the sentence end?

Matthew takes his pet rabbit in to see Brett when it gets sick. This is because 
OPTIONS:
- Matthew is a concerned pet vet.
- Brett is a concerned pet vet.

[A]: Brett is a concerned pet vet.


[Q]: How does the sentence end?

The boy slept worse on the bunkbed than the futon, because the 
OPTIONS:
- bunkbed was comfortable.
- futon was comfortable.

[A]: futon was comfortable.


[Q]: How does the sentence end?

Eric's Facebook account has more friends than the one Ian has due to 
OPTIONS:
- Eric being a friendlier person.
- Ian being a friendlier person.

[A]:
Eric being a friendlier person.