Problem: How does the sentence end?

Kayla was much taller than Samantha so 
OPTIONS:
- Kayla scored very few points while playing basketball.
- Samantha scored very few points while playing basketball.
Answer: Samantha scored very few points while playing basketball.

Problem: How does the sentence end?

Jennifer would outgrow Sarah in a matter of a few months even though 
OPTIONS:
- Jennifer was younger.
- Sarah was younger.
Answer: Jennifer was younger.

Problem: How does the sentence end?

Robert is going to look good at Prom while Justin is not going to look good at Prom. 
OPTIONS:
- Robert does not look good at Prom.
- Justin does not look good at Prom.
Answer: Justin does not look good at Prom.

Problem: How does the sentence end?

Emily volunteers at the local shelter every weekend unlike Sarah, because 
OPTIONS:
- Emily has a soft heart.
- Sarah has a soft heart.
Answer:
Emily has a soft heart.