[Q]: How does the sentence end?

The screen got scratched when John was cleaning it with a cloth because the

[A]: screen is smooth.

[Q]: How does the sentence end?

We were not able to reserve the locations near the forest, but we could reserve the places near the beach because the

[A]: locations were unavailable.

[Q]: How does the sentence end?

Robert was able to reach the bottle that was on the top shelf unlike Samuel, due to

[A]:
Robert being tall.