[Q]: How does the sentence end?

Randy was able to fit into old college jeans but not William because 
OPTIONS:
- Randy had actually gained weight over the years.
- William had actually gained weight over the years.

[A]: William had actually gained weight over the years.
QUES: Continue writing.

Joel sought advice from Dennis on how to stay trim because 

OPTIONS:
- Joel did not have good diet habits.
- Dennis did not have good diet habits.
+++++++++
ANS: Joel did not have good diet habits.
Problem: How does the sentence end?

Joel shredded the guitar solo while Hunter hammered on the piano, because 
OPTIONS:
- Joel was an excellent pianist.
- Hunter was an excellent pianist.
Answer: Hunter was an excellent pianist.
sentence: The first specifications were thrown out and the second specifications were used because the  OPTIONS:
- first specifications exceeded requirements.
- second specifications exceeded requirements.
complete: second specifications exceeded requirements.
Kayla lifted up her shirt and proudly displayed her piercings to Rachel.  
OPTIONS:
- Kayla was daring.
- Rachel was daring.
Kayla was daring.
Problem: Continue the following story.

Betty relied on Sarah to monitor her work since 
OPTIONS:
- Betty was deficient at keeping track of her schedule.
- Sarah was deficient at keeping track of her schedule.
Here's how I want to continue it:
Betty was deficient at keeping track of her schedule.