Problem: How does the sentence end?

Rebecca told Amy that her neck pain has not gone away now for two weeks.  
OPTIONS:
- Rebecca was sympathetic.
- Amy was sympathetic.
Answer: Amy was sympathetic.
sentence: Logan hated working night shifts but Lawrence preferred them.  OPTIONS:
- Logan had never suffered from insomnia.
- Lawrence had never suffered from insomnia.
complete: Logan had never suffered from insomnia.
Samuel found yoga class much easier to do than Logan because 
OPTIONS:
- Samuel was quite limber.
- Logan was quite limber.
Samuel was quite limber.
Input: Continue writing.

You are going to learn more about the species watching them reproduce in their natural habitat than in a lab because the 
OPTIONS:
- habitat is less comfortable for them.
- lab is less comfortable for them.

Continued: lab is less comfortable for them.
Story needs to be completed:
Christopher has much stronger arm muscles than Adam because 
OPTIONS:
- Christopher didn't play volleyball for fifteen years.
- Adam didn't play volleyball for fifteen years.

My choice:
Adam didn't play volleyball for fifteen years.
Problem: How does the sentence end?

The smoke of the incense filled the whole room and started to choke people because the 
OPTIONS:
- smoke is too small.
- room is too small.
Answer:
room is too small.