Problem: How does the sentence end?

Medical treatments were a steady part of Aaron's life, but not Ian's because 
OPTIONS:
- Aaron ate healthy foods.
- Ian ate healthy foods.
Answer: Ian ate healthy foods.
sentence: Catherine liked to draw hearts more than she liked to draw cars because the  OPTIONS:
- hearts are complicated.
- cars are complicated.
complete: cars are complicated.
Kyle apologized to Lawrence as 
OPTIONS:
- Kyle had hit him on the head with a golf ball.
- Lawrence had hit him on the head with a golf ball.
Kyle had hit him on the head with a golf ball.
Input: Continue writing.

Carrie's hair was straighter than Jennifer's, so 
OPTIONS:
- Carrie had to use more hair conditioner to remove tangles.
- Jennifer had to use more hair conditioner to remove tangles.

Continued: Jennifer had to use more hair conditioner to remove tangles.
Story needs to be completed:
We kept the corridor under surveillance but could ignore the entrance, as it was likely the criminals would use the 
OPTIONS:
- corridor to escape.
- entrance to escape.

My choice:
corridor to escape.
Problem: How does the sentence end?

The person speaking had to replace to microphone and not the amplifier because the 
OPTIONS:
- microphone was broken.
- amplifier was broken.
Answer:
microphone was broken.