[Q]: How does the sentence end?

Rebecca poked fun at Katrina at school all the time, because 
OPTIONS:
- Rebecca is such a horrible person.
- Katrina is such a horrible person.

[A]: Rebecca is such a horrible person.


[Q]: How does the sentence end?

Carrie was not able to sleep before Christmas day but Jennifer was  because 
OPTIONS:
- Carrie was indifferent about it.
- Jennifer was indifferent about it.

[A]: Jennifer was indifferent about it.


[Q]: How does the sentence end?

While camping, Betty asked Christine to put the tent up because 
OPTIONS:
- Betty was a novice camper.
- Christine was a novice camper.

[A]:
Betty was a novice camper.