Problem: How does the sentence end?

In social situations, Samantha comes off more awkward than Maria because 
OPTIONS:
- Samantha is very outgoing.
- Maria is very outgoing.
Answer: Maria is very outgoing.

Problem: How does the sentence end?

While operating the washer, Felicia had their clothes cleaned, while Betty still had dirty clothes. 
OPTIONS:
- Felicia had used the right amount of detergent.
- Betty had used the right amount of detergent.
Answer: Felicia had used the right amount of detergent.

Problem: How does the sentence end?

The blackberries tasted sweet but the raspberries tasted tart because the 
OPTIONS:
- blackberries were less ripe.
- raspberries were less ripe.
Answer: raspberries were less ripe.

Problem: How does the sentence end?

Kenneth had to use a lot more tissue than Brian today because 
OPTIONS:
- Kenneth doesn't have as bad of a cold.
- Brian doesn't have as bad of a cold.
Answer:
Brian doesn't have as bad of a cold.