Problem: How does the sentence end?

Erin seems to think owning guns is somehow necessary whereas Kayla knows that is not the case in a civilized society since
OPTIONS:
- Erin is intelligent.
- Kayla is intelligent.
Answer: Kayla is intelligent.

sentence: Zelda could throw the javelin further than the shot put, because the OPTIONS:
- javelin was much lighter.
- shot put was much lighter.
complete: javelin was much lighter.

Because his car was recently towed Carl had to take his bike to work. He tended to be more careless when parking the
OPTIONS:
- car .
- bike .
car .

Input: Continue writing.

Donald's cat ran faster and won the race against Kenneth's cat, so
OPTIONS:
- Donald won the bet.
- Kenneth won the bet.

Continued: Donald won the bet.

Story needs to be completed:
Justin took a difficult physics class just for fun in college,unlike Donald because
OPTIONS:
- Justin had a very simple mind.
- Donald had a very simple mind.

My choice:
Donald had a very simple mind.

Problem: How does the sentence end?

Kayla bought a tablet for Rachel for their birthday last Sunday, and
OPTIONS:
- Kayla thanked them for the thoughtful gift.
- Rachel thanked them for the thoughtful gift.
Answer:
Rachel thanked them for the thoughtful gift.