[Q]: How does the sentence end?

The piano that we just bought plays better than the keyboard because the 
OPTIONS:
- piano is in tune.
- keyboard is in tune.

[A]: piano is in tune.


[Q]: How does the sentence end?

Laura asked to borrow some closet space from Natalie , since 
OPTIONS:
- Laura had copious room in hers.
- Natalie had copious room in hers.

[A]: Natalie had copious room in hers.


[Q]: How does the sentence end?

The posture in which she stood made the performance of the song better. The 
OPTIONS:
- Song was melodious.
- Posture was melodious.

[A]:
Song was melodious.