Problem: How does the sentence end?

Joseph helped Donald with writing his historical fiction book because 
OPTIONS:
- Joseph was more experienced in the field.
- Donald was more experienced in the field.
Answer: Joseph was more experienced in the field.
sentence: Donald liked the taste of mayonnaise on a sandwich but Steven liked mustard better.  OPTIONS:
- Donald bought some Duke's mayo at the market.
- Steven bought some Duke's mayo at the market.
complete: Donald bought some Duke's mayo at the market.
Kayla drank more wine than Rachel at the wine tasting because 
OPTIONS:
- Kayla enjoyed chatting and forgot to drink it.
- Rachel enjoyed chatting and forgot to drink it.
Rachel enjoyed chatting and forgot to drink it.
Input: Continue writing.

The man took the stairwell to the third floor instead of the elevator because the 
OPTIONS:
- stairwell was clear.
- elevator was clear.

Continued: stairwell was clear.
Story needs to be completed:
Michael had done more travelling and sightseeing than Samuel. 
OPTIONS:
- Michael thought a long international flight was too much hassle for the experience.
- Samuel thought a long international flight was too much hassle for the experience.

My choice:
Samuel thought a long international flight was too much hassle for the experience.
Problem: How does the sentence end?

It's better to sleep on flannel sheets than silk sheets in the winter. The 
OPTIONS:
- flannel keeps you cooler.
- silk keeps you cooler.
Answer:
silk keeps you cooler.