Problem: How does the sentence end?

Joe always preferred going to the beach in the summer instead of a pool, because the water in the 
OPTIONS:
- pool was cold.
- beach was cold.
Answer: pool was cold.
sentence: I don't think that nails work better than screws because the  OPTIONS:
- nails don't lock in to each other.
- screws don't lock in to each other.
complete: nails don't lock in to each other.
The husband bought the diamond for the marriage to his bride instead of the emerald because the 
OPTIONS:
- diamond was coarse.
- emerald was coarse.
emerald was coarse.
Input: Continue writing.

Christine always had to use makeup foundation but not Erin because 
OPTIONS:
- Christine had smooth face skin.
- Erin had smooth face skin.

Continued: Erin had smooth face skin.
Story needs to be completed:
William works better under pressure but Leslie does not as 
OPTIONS:
- William is a calm person.
- Leslie is a calm person.

My choice:
William is a calm person.
Problem: How does the sentence end?

Jim has no problem writing letters to people, but he hates writing essays because the topic of the 
OPTIONS:
- letters are more personal to him.
- essays are more personal to him.
Answer:
letters are more personal to him.