[Q]: How does the sentence end?

The fish that Kyle breeds are large, but Joel just breeds small ones. 
OPTIONS:
- Kyle must have a tinier tank.
- Joel must have a tinier tank.

[A]: Joel must have a tinier tank.
QUES: Continue writing.

Tanya wanted to return the found wallet to the owner, but Jessica argued that they should keep the money, because 

OPTIONS:
- Tanya was less ethical.
- Jessica was less ethical.
+++++++++
ANS: Jessica was less ethical.
Problem: How does the sentence end?

After dinner Robert opted for wine and cheese while Logan had a brownie. 
OPTIONS:
- Robert had always had a big sweet tooth.
- Logan had always had a big sweet tooth.
Answer: Logan had always had a big sweet tooth.
sentence: The chef tried to store the lasagna in the box but the  OPTIONS:
- box was too large.
- lasagna was too large.
complete: lasagna was too large.
I moved the hedgehogs from their cages into the new holding pen.  The hedgehogs missed their old 
OPTIONS:
- cages .
- pen .
cages .
Problem: Continue the following story.

Overindulging during the Christmas season was a problem for Nick but not Kenneth, as 
OPTIONS:
- Nick always fell off their diet.
- Kenneth always fell off their diet.
Here's how I want to continue it:
Nick always fell off their diet.