Problem: How does the sentence end?

Amy bought chocolate and cream. She mixed up the chocolate and the 
OPTIONS:
- chocolate and made a float.
- cream and made a float.
Answer: cream and made a float.

Problem: How does the sentence end?

Donald was not old enough to drive but Leslie was, so 
OPTIONS:
- Donald was driven to store because they could not drive on their own.
- Leslie was driven to store because they could not drive on their own.
Answer: Donald was driven to store because they could not drive on their own.

Problem: How does the sentence end?

It took a long time for Mary to heal from her fallout with Tanya as 
OPTIONS:
- Mary was just more sensitive.
- Tanya was just more sensitive.
Answer: Mary was just more sensitive.

Problem: How does the sentence end?

Samantha was asked for advice on caring for a begonia by Victoria because 
OPTIONS:
- Samantha had a green thumb.
- Victoria had a green thumb.
Answer:
Samantha had a green thumb.