Problem: How does the sentence end?

Ada led the sweaty horse from the barn to the meadow, because the 
OPTIONS:
- barn was cool.
- meadow was cool.
Answer: meadow was cool.
sentence: Lawrence was able to put a lot more money into savings unlike Kenneth, because the job of  OPTIONS:
- Lawrence was worse.
- Kenneth was worse.
complete: Kenneth was worse.
Kayla fit into a size six shoe while Tanya did not because 
OPTIONS:
- Kayla has small feet.
- Tanya has small feet.
Kayla has small feet.
Input: Continue writing.

Carrie bought a funny birthday card just for Sarah. 
OPTIONS:
- Carrie slipped it under her door.
- Sarah slipped it under her door.

Continued: Carrie slipped it under her door.
Story needs to be completed:
She knew something was wrong with the hearing in her ear because the 
OPTIONS:
- ear was painful.
- hearing was painful.

My choice:
ear was painful.
Problem: How does the sentence end?

Samantha stopped smoking for the sake of Maria, because 
OPTIONS:
- Samantha wanted them to stop worrying.
- Maria wanted them to stop worrying.
Answer:
Samantha wanted them to stop worrying.