[Q]: How does the sentence end?

The man's voice sounded louder in the gym than in the hall because the microphones in the 
OPTIONS:
- gym were better.
- hall were better.

[A]: gym were better.
QUES: Continue writing.

The woman tried to hang the towel on the new rack but the 

OPTIONS:
- towel was too small.
- rack was too small.
+++++++++
ANS: rack was too small.
Problem: How does the sentence end?

The family was excited for Brett to visit but not Aaron because 
OPTIONS:
- Brett always asked for money.
- Aaron always asked for money.
Answer: Aaron always asked for money.
sentence: The helmet will not fit on the head of the teenager because the  OPTIONS:
- head is extremely tapered.
- helmet is extremely tapered.
complete: helmet is extremely tapered.
They were lighting the sticks with matches, but preferred the lighters, so the 
OPTIONS:
- lighters were quickly utilized.
- matches were quickly utilized.
lighters were quickly utilized.
Problem: Continue the following story.

Kyle was more likely to suffer from a complication due to surgery than Matthew because 
OPTIONS:
- Kyle had a weaker immune system.
- Matthew had a weaker immune system.
Here's how I want to continue it:
Kyle had a weaker immune system.