[Q]: How does the sentence end?

The engineer had to take the pressure off of the box from the ball because the 
OPTIONS:
- box was too heavy.
- ball was too heavy.

[A]: ball was too heavy.


[Q]: How does the sentence end?

The man lost weight after he burned fat and lost some muscle, the 
OPTIONS:
- muscle was lighter.
- fat was lighter.

[A]: fat was lighter.


[Q]: How does the sentence end?

There are two women. Sarah likes men, but Emily is interested in women, so 
OPTIONS:
- Sarah is heterosexual.
- Emily is heterosexual.

[A]:
Sarah is heterosexual.