Problem: How does the sentence end?

Victoria fed the goats in the morning but not Amy because 
OPTIONS:
- Victoria was unfamiliar in animal husbandry.
- Amy was unfamiliar in animal husbandry.
Answer: Amy was unfamiliar in animal husbandry.

Problem: How does the sentence end?

Derrick had excellent credit but Christopher did not because 
OPTIONS:
- Derrick didn't spend beyond their means.
- Christopher didn't spend beyond their means.
Answer: Derrick didn't spend beyond their means.

Problem: How does the sentence end?

We add milk to the cake mix, but not egg, since the 
OPTIONS:
- milk was less important for the flavor we wanted.
- egg was less important for the flavor we wanted.
Answer: egg was less important for the flavor we wanted.

Problem: How does the sentence end?

Felicia would make toys for their kids while Samantha would buy them since 
OPTIONS:
- Felicia is poorer.
- Samantha is poorer.
Answer:
Felicia is poorer.