Problem: How does the sentence end?

Samuel knows how to make some different knots with a rope but Joel doesn't as 
OPTIONS:
- Samuel spent not one year as a boy scout.
- Joel spent not one year as a boy scout.
Answer: Joel spent not one year as a boy scout.

Problem: How does the sentence end?

Carrie had a teenage girl and Jessica had a teenage boy, so 
OPTIONS:
- Carrie bought their kid a lot of makeup on their birthday.
- Jessica bought their kid a lot of makeup on their birthday.
Answer: Carrie bought their kid a lot of makeup on their birthday.

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?

Laura was a better writer than Erin, and 
OPTIONS:
- Laura needed a lot more tutoring in regards to essays.
- Erin needed a lot more tutoring in regards to essays.
Answer:
Erin needed a lot more tutoring in regards to essays.