Problem: How does the sentence end?

Nick loves cheesecake much more than Neil does because 
OPTIONS:
- Nick doesn't have a sweet tooth.
- Neil doesn't have a sweet tooth.
Answer: Neil doesn't have a sweet tooth.

Problem: How does the sentence end?

Laura always had more motivation in life and achieving goals than Katrina, as 
OPTIONS:
- Laura was lazy.
- Katrina was lazy.
Answer: Katrina was lazy.

Problem: How does the sentence end?

Maria thought the pop star had a great voice but Katrina thought they sounded awful. 
OPTIONS:
- Maria bought tickets to the pop star's concert.
- Katrina bought tickets to the pop star's concert.
Answer: Maria bought tickets to the pop star's concert.

Problem: How does the sentence end?

Jeffrey was able to perform a backflip but Nick was not because 
OPTIONS:
- Jeffrey was very rigid.
- Nick was very rigid.
Answer:
Nick was very rigid.