Problem: How does the sentence end?

Matt walked across the sand on the beach and burned the skin on his feet because the 
OPTIONS:
- sand was too hot.
- skin was too hot.
Answer: sand was too hot.

Problem: How does the sentence end?

Laura was constantly bothering Lindsey and annoying them, so 
OPTIONS:
- Laura was called out on this behavior.
- Lindsey was called out on this behavior.
Answer: Laura was called out on this behavior.

Problem: How does the sentence end?

Ian asked Kevin how to shoot a handgun, because 
OPTIONS:
- Ian  already learned shooting from a handgun.
- Kevin  already learned shooting from a handgun.
Answer: Kevin  already learned shooting from a handgun.

Problem: How does the sentence end?

While at the mall, Tanya bought new handbags while Christine did not because 
OPTIONS:
- Tanya had spent all her money and could not treat herself to some new bags.
- Christine had spent all her money and could not treat herself to some new bags.
Answer:
Christine had spent all her money and could not treat herself to some new bags.