Problem: How does the sentence end?

Using Rose water as a tan remover worked for Amy but not Katrina because 
OPTIONS:
- Amy liked the smell.
- Katrina liked the smell.
Answer: Amy liked the smell.
sentence: Nelson continues to pick on Kevin, even after being told to stop, because  OPTIONS:
- Nelson is a relentless weakling.
- Kevin is a relentless weakling.
complete: Kevin is a relentless weakling.
The school bought a bunch of new pencils, but didn't get any pens, because the 
OPTIONS:
- pens were low quality.
- pencils were low quality.
pens were low quality.
Input: Continue writing.

Sarah told Christine that she had not eaten ice cream all summer.  
OPTIONS:
- Sarah had a shocked expression.
- Christine had a shocked expression.

Continued: Christine had a shocked expression.
Story needs to be completed:
I allow children to play with beach balls in the house but not golf balls as the 
OPTIONS:
- beach balls are soft.
- golf balls are soft.

My choice:
beach balls are soft.
Problem: How does the sentence end?

Carrie signed up for an improv group while Christine did not, because 
OPTIONS:
- Carrie had always really enjoyed acting.
- Christine had always really enjoyed acting.
Answer:
Carrie had always really enjoyed acting.