Problem: How does the sentence end?

Jason sold his new software to Brian, because
OPTIONS:
- Jason worked as a developer for hire.
- Brian worked as a developer for hire.
Answer: Jason worked as a developer for hire.

Problem: How does the sentence end?

The struggle was more intense for Emily than it was for Kayla, because
OPTIONS:
- Emily was strong by nature.
- Kayla was strong by nature.
Answer: Kayla was strong by nature.

Problem: How does the sentence end?

Hunter's cakes cool much more quickly than William's, as a result of
OPTIONS:
- Hunter putting them on the window sill.
- William putting them on the window sill.
Answer: Hunter putting them on the window sill.

Problem: How does the sentence end?

Christopher always gets knocked down by Steven when they fight each other in the boxing ring.
OPTIONS:
- Christopher is strong.
- Steven is strong.
Answer:
Steven is strong.