Problem: How does the sentence end?

The combat vets nightmares were much worse than the dreams of the student, because the 
OPTIONS:
- nightmares were imaginary.
- dreams were imaginary.
Answer: dreams were imaginary.
sentence: Christopher needs Ian's advice on how to create a positive classroom atmosphere, because  OPTIONS:
- Christopher is an experienced teacher.
- Ian is an experienced teacher.
complete: Ian is an experienced teacher.
The oats that I had at the restaurant were better than my bananas, because the 
OPTIONS:
- oats were delicious.
- bananas were delicious.
oats were delicious.
Input: Continue writing.

The woman tried to hang the towel on the new rack but the 
OPTIONS:
- towel was too large.
- rack was too large.

Continued: towel was too large.
Story needs to be completed:
Daria needed a flannel shirt to replace the granddad shirt because the 
OPTIONS:
- granddad shirt is old.
- flannel shirt is old.

My choice:
granddad shirt is old.
Problem: How does the sentence end?

Donald doesn't have as healthy of an immune system than Kevin because 
OPTIONS:
- Donald takes herbal supplements daily.
- Kevin takes herbal supplements daily.
Answer:
Kevin takes herbal supplements daily.