Problem: How does the sentence end?

Carl tripped into a puddle of water, got his jodhpurs wet, needed some dry leggings, and decided on yoga pants. He put on the 
OPTIONS:
- jodhpurs because they are dry.
- yoga pants because they are dry.
Answer: yoga pants because they are dry.

Problem: How does the sentence end?

I bought a new pipe, but it didn't fit into the socket, because the 
OPTIONS:
- pipe was too thick.
- socket was too thick.
Answer: pipe was too thick.

Problem: How does the sentence end?

The dog ran uphill to chase the cat, but the cat was able to escape because the 
OPTIONS:
- dog was too slow.
- cat was too slow.
Answer: dog was too slow.

Problem: How does the sentence end?

The little boy poured milk from the carton into his cereal bowl until the 
OPTIONS:
- bowl was empty.
- carton was empty.
Answer:
carton was empty.