Problem: How does the sentence end?

Since Brett drove Craig to the gym then went home, 
OPTIONS:
- Brett spent the next two hours at the gym.
- Craig spent the next two hours at the gym.
Answer: Craig spent the next two hours at the gym.
sentence: Felicia accepted an application from Rachel to work as an intern in the company, then  OPTIONS:
- Felicia was hired.
- Rachel was hired.
complete: Rachel was hired.
Neil hated all kinds of birds while Leslie delighted in them, so 
OPTIONS:
- Neil took care of their pet parrot.
- Leslie took care of their pet parrot.
Leslie took care of their pet parrot.
Input: Continue writing.

It was more natural for Christopher to go hunting than Joseph because 
OPTIONS:
- Christopher had grown up in the city.
- Joseph had grown up in the city.

Continued: Joseph had grown up in the city.
Story needs to be completed:
Nick complained to Derrick because 
OPTIONS:
- Nick was frustrated with being in a failing relationship for this long.
- Derrick was frustrated with being in a failing relationship for this long.

My choice:
Nick was frustrated with being in a failing relationship for this long.
Problem: How does the sentence end?

Jeffrey was more nervous to attend high school than Christopher was, because 
OPTIONS:
- Jeffrey was a Freshman.
- Christopher was a Freshman.
Answer:
Jeffrey was a Freshman.