[Q]: How does the sentence end?

To maintain high performance we used the reliable turbine rather than the old engine as the 
OPTIONS:
- turbine was efficient.
- engine was efficient.

[A]: turbine was efficient.
QUES: Continue writing.

Laura paid Lindsey to braid their hair because 

OPTIONS:
- Laura didn't remember how to do it.
- Lindsey didn't remember how to do it.
+++++++++
ANS: Laura didn't remember how to do it.
Problem: How does the sentence end?

Whenever given the choice, James chose to feed on chocolates as opposed to salads because the 
OPTIONS:
- chocolates were unappetizing.
- salads were unappetizing.
Answer: salads were unappetizing.
sentence: She preferred curating a relationship on the computer instead of the phone, because the  OPTIONS:
- phone connection was steady.
- computer connection was steady.
complete: computer connection was steady.
Logan had a cleaner car than Joel had because 
OPTIONS:
- Logan had gone to the car wash.
- Joel had gone to the car wash.
Logan had gone to the car wash.
Problem: Continue the following story.

I always did well in that topic, but I alway struggled in the other subject, because the 
OPTIONS:
- topic was a lot harder.
- subject was a lot harder.
Here's how I want to continue it:
subject was a lot harder.