The answer is most likely A because it looks like "over" is the only preposition used in any of these sentences.
Answer:
Sentry
Explanation:
Definition: a soldier stationed to keep guard or to control access to a place.
If you replace the word sentry with guard you would better understand the sentence.
I'm new it would help if you gave thanks :)
Answer:
its stereotyping because they assume the reason is hat he is a boy
