[Q]: How does the sentence end?

My relationships as a teen worked out far differently from my adult ones because the
OPTIONS:
- teen ones were too immature.
- adult ones were too immature.

[A]: teen ones were too immature.

[Q]: How does the sentence end?

Dennis explained the comic book cover to Aaron as
OPTIONS:
- Dennis was unfamiliar with the whole series.
- Aaron was unfamiliar with the whole series.

[A]: Aaron was unfamiliar with the whole series.

[Q]: How does the sentence end?

The heart surgery center was not covered by insurance because the
OPTIONS:
- center paid too little money for the procedure.
- insurance paid too little money for the procedure.

[A]:
insurance paid too little money for the procedure.