Problem: How does the sentence end?

Randy used a thick cream to soothe Nick's burn because 
OPTIONS:
- Randy had been a nurse for a long time.
- Nick had been a nurse for a long time.
Answer: Randy had been a nurse for a long time.
sentence: Elena was asked by Rachel to plant the poppy seeds because  OPTIONS:
- Elena had a green thumb.
- Rachel had a green thumb.
complete: Elena had a green thumb.
Nick goes to sleep earlier than Brett because 
OPTIONS:
- Nick goes to work later in the morning.
- Brett goes to work later in the morning.
Brett goes to work later in the morning.
Input: Continue writing.

Bob finished eating his oranges but couldn't eat all his watermelons, because there was a grand amount of the 
OPTIONS:
- oranges .
- watermelons .

Continued: watermelons .
Story needs to be completed:
Mary needed a prescription for cholesterol medicine but not Rachel because 
OPTIONS:
- Mary ate a diet filled with bacon.
- Rachel ate a diet filled with bacon.

My choice:
Mary ate a diet filled with bacon.
Problem: How does the sentence end?

I liked the ring more than I liked the necklace because the 
OPTIONS:
- ring was more dull.
- necklace was more dull.
Answer:
necklace was more dull.