[Q]: How does the sentence end?

The author wrote notes on the writing pad with a pen until the 
OPTIONS:
- pen was empty.
- pad was empty.

[A]: pen was empty.


[Q]: How does the sentence end?

Elena did everything to not stress Rachel out over the weekend because 
OPTIONS:
- Elena was very considerate.
- Rachel was very considerate.

[A]: Elena was very considerate.


[Q]: How does the sentence end?

Lindsey never suffered from a concussion after fighting but Maria did because 
OPTIONS:
- Lindsey never used a helmet.
- Maria never used a helmet.

[A]:
Maria never used a helmet.