[Q]: How does the sentence end?

Joseph has a lot more whiteheads on his face than Joel does because

[A]: Joel is past puberty.

[Q]: How does the sentence end?

Ryan is new to investing so he asks his menthor Derrick for advices, because

[A]: Derrick is good at investing.

[Q]: How does the sentence end?

Sarah looked at her phone while Felicia took pictures of the landscape because

[A]:
Sarah was unimpressed by the view.