Problem: How does the sentence end?

The kids liked the hamster as a pet. The hamster liked to play on the wheel more than the beam, since the 
OPTIONS:
- wheel inactive.
- beam inactive.
Answer: beam inactive.
sentence: James could not get the entire stones into the aquarium because the  OPTIONS:
- stone is big.
- aquarium is big.
complete: stone is big.
When it was time for the reunion, Neil got invited but not Aaron, so 
OPTIONS:
- Neil was rather happy about the situation.
- Aaron was rather happy about the situation.
Neil was rather happy about the situation.
Input: Continue writing.

Robert was a very well regarded professor but Lawrence was not. 
OPTIONS:
- Robert was unable to make tenure at their university.
- Lawrence was unable to make tenure at their university.

Continued: Lawrence was unable to make tenure at their university.
Story needs to be completed:
The florist tried to put the plants in the pots but the 
OPTIONS:
- pots were too small.
- plants were too small.

My choice:
pots were too small.
Problem: How does the sentence end?

As a treat, the rich husband presented his wife a new car instead of a purse since the 
OPTIONS:
- car was more usable.
- purse was more usable.
Answer:
car was more usable.