[Q]: How does the sentence end?

The ride up the cliff was a source of anxiety for the tourists, compared to the walk on the beach, because the

[A]: cliff was so jarring.

[Q]: How does the sentence end?

Lindsey never suffered from a concussion after fighting but Maria did because

[A]: Maria never used a helmet.

[Q]: How does the sentence end?

The cure was discovered by

[A]:
Logan . Logan had promised Randy that it could be done and they would recover.