Problem: How does the sentence end?

Pam's lizard caught his tail in the door and ran under the couch instead of the chair, because the 
OPTIONS:
- couch was safer.
- chair was safer.
Answer: couch was safer.

Problem: How does the sentence end?

They wanted that apartment in the city centre but bought a small apartment in the downtown instead, because the 
OPTIONS:
- apartment in the city centre is less expensive.
- small apartment in the downtown is less expensive.
Answer: small apartment in the downtown is less expensive.

Problem: How does the sentence end?

At the orchard, Brian picked less apples than Joseph, because 
OPTIONS:
- Brian picked apples very quickly.
- Joseph picked apples very quickly.
Answer: Joseph picked apples very quickly.

Problem: How does the sentence end?

Donald asked Christopher on how to heal a sprained ankle but 
OPTIONS:
- Donald was clueless on the topic.
- Christopher was clueless on the topic.
Answer:
Christopher was clueless on the topic.