[Q]: How does the sentence end?

Since Elena was a homeowner and Erin lived in an apartment,
OPTIONS:
- Elena rented their place of residence.
- Erin rented their place of residence.

[A]: Erin rented their place of residence.

[Q]: How does the sentence end?

Jason had a lot of confidence but Randy had none, so
OPTIONS:
- Jason had no trouble with public speaking and making new friends.
- Randy had no trouble with public speaking and making new friends.

[A]: Jason had no trouble with public speaking and making new friends.

[Q]: How does the sentence end?

Eric forgot to change the oil in their motor but Craig didn't.
OPTIONS:
- Eric had a lot of engine problems.
- Craig had a lot of engine problems.

[A]:
Eric had a lot of engine problems.