[Q]: How does the sentence end?

Ian usually wore contact lenses, whereas Steven stuck to wearing glasses, because

[A]: Ian was vain.

[Q]: How does the sentence end?

Samuel comforted Benjamin because

[A]: Benjamin broke-up with their long term spouse over a cheating scandal.

[Q]: How does the sentence end?

Kat liked to go swim at the pool instead of at the lake because the

[A]:
pool was clear.