Problem: How does the sentence end?

Dennis got an A in Psychology while Kevin could only muster a C, so
OPTIONS:
- Dennis offered tutoring.
- Kevin offered tutoring.
Answer: Dennis offered tutoring.

Problem: How does the sentence end?

I prefer the dermatologist's treatments for acne rather than the over-the-counter treatments, because the
OPTIONS:
- over-the-counter treatments work slowly.
- dermatologist's treatments work slowly.
Answer: over-the-counter treatments work slowly.

Problem: How does the sentence end?

I liked the reason a lot better than the excuse, because the
OPTIONS:
- reason was honest.
- excuse was honest.
Answer: reason was honest.

Problem: How does the sentence end?

Joel was in a much better shape compared to Ian and that's why
OPTIONS:
- Joel finished the marathon first.
- Ian finished the marathon first.
Answer:
Joel finished the marathon first.