Problem: How does the sentence end?

Neil felt well rested while Ryan felt fatigue, so 
OPTIONS:
- Neil agreed to drive for the remainder of the road trip.
- Ryan agreed to drive for the remainder of the road trip.
Answer: Neil agreed to drive for the remainder of the road trip.
sentence: The husband  ordered the pasta instead of the casserole, because the  OPTIONS:
- pasta was highly recommended.
- casserole was highly recommended.
complete: pasta was highly recommended.
Kyle needed an oxygen mask urgently while Brian did not. 
OPTIONS:
- Kyle had a collapsed lung.
- Brian had a collapsed lung.
Kyle had a collapsed lung.
Input: Continue writing.

Samantha was not used to the altitude but Sarah was, so 
OPTIONS:
- Samantha fainted at the summit.
- Sarah fainted at the summit.

Continued: Samantha fainted at the summit.
Story needs to be completed:
There was more blood after the accident than the fight because the 
OPTIONS:
- accident was safer.
- fight was safer.

My choice:
fight was safer.
Problem: How does the sentence end?

Elena but not Rachel was ready for the attack because 
OPTIONS:
- Elena did not hear the enemy approaching.
- Rachel did not hear the enemy approaching.
Answer:
Rachel did not hear the enemy approaching.