Problem: How does the sentence end?

Carlos wanted to update his computer accessories and decided to get headphones first instead of a microphone because the 
Answer: headphones would be used more often.

Problem: How does the sentence end?

Justin followed the entire treatment plan given to them by Neil, because 
Answer: Neil had the expertise.

Problem: How does the sentence end?

James agreed to sharing the profit but frowned at property seizure because the 
Answer: profit seems like a gain.

Problem: How does the sentence end?

Jessica sometimes forgot to feed their goldfish but Patricia never did because 
Answer:
Patricia was very conscientious.