[Q]: How does the sentence end?

The cheap bookcase was secured against the library wall because the
OPTIONS:
- bookcase was fairly strong.
- library wall was fairly strong.

[A]: library wall was fairly strong.

[Q]: How does the sentence end?

Eric took some homemade chicken soup to Randy who was sick in bed, and
OPTIONS:
- Eric was very appreciative.
- Randy was very appreciative.

[A]: Randy was very appreciative.

[Q]: How does the sentence end?

Erin's sleep has been much better than Jessica's lately due to
OPTIONS:
- Erin using Ambien regularly.
- Jessica using Ambien regularly.

[A]:
Erin using Ambien regularly.