Problem: How does the sentence end?

The schedule of Elena is much more packed than Christine's. 
OPTIONS:
- Elena is a very busy person.
- Christine is a very busy person.
Answer: Elena is a very busy person.

Problem: How does the sentence end?

The characters in Aaron's novel were more unique than Kyle's because 
OPTIONS:
- Aaron is the more creative person.
- Kyle is the more creative person.
Answer: Aaron is the more creative person.

Problem: How does the sentence end?

Nick gave Matthew a dose of medication because he had a fever. 
OPTIONS:
- Nick checked on him later.
- Matthew checked on him later.
Answer: Nick checked on him later.

Problem: How does the sentence end?

Samantha was able to successfully breed and sell several pairs of lovebirds but Sarah could not, because 
OPTIONS:
- Samantha was good at handling animals.
- Sarah was good at handling animals.
Answer:
Samantha was good at handling animals.