Problem: How does the sentence end?

I used an ax to chop down a tree, but had to get a bigger ax because the 
OPTIONS:
- ax was too thick.
- tree was too thick.
Answer: tree was too thick.

Problem: How does the sentence end?

The mountain bike will not fit on the trailer because the 
OPTIONS:
- mountain bike is too slender.
- trailer is too slender.
Answer: trailer is too slender.

Problem: How does the sentence end?

Nobody hears the phone ringing in the room because we were busy dancing to the music and the 
OPTIONS:
- music is loud.
- phone is loud.
Answer: music is loud.

Problem: How does the sentence end?

Sarah was a lot more fashionable than Kayla so 
OPTIONS:
- Sarah got asked to the prom first.
- Kayla got asked to the prom first.
Answer:
Sarah got asked to the prom first.