Problem: How does the sentence end?

So
OPTIONS:
- Randy was sorry because Randy's horse was injured by Kyle who is actually pretty embarrassed by this point.
- Kyle was sorry because Randy's horse was injured by Kyle who is actually pretty embarrassed by this point.
Answer: Kyle was sorry because Randy's horse was injured by Kyle who is actually pretty embarrassed by this point.

sentence: Justin decided to take Steven 's place in the mountain expedition because OPTIONS:
- Justin was too tired.
- Steven was too tired.
complete: Steven was too tired.

Dennis was exhausted at the end of the day but Robert wasn't although
OPTIONS:
- Dennis had spent the day planting trees.
- Robert had spent the day planting trees.
Robert had spent the day planting trees.

Input: Continue writing.

The dancer tried to put the skirt into the bag but the
OPTIONS:
- bag was too small.
- skirt was too small.

Continued: bag was too small.

Story needs to be completed:
Cynthia applied sunscreen while Tanya did not.
OPTIONS:
- Cynthia has naturally dark skin that resists burns.
- Tanya has naturally dark skin that resists burns.

My choice:
Tanya has naturally dark skin that resists burns.

Problem: How does the sentence end?

Katrina managed to stop smoking but Betty did not because
OPTIONS:
- Katrina was indifferent to it.
- Betty was indifferent to it.
Answer:
Betty was indifferent to it.