Explanation:
what phases are we picking from
You are right, the prepositional phrase in the sentence <em>Late last night there was a loud knock at the door </em>is D) at the door.
The only preposition in the sentence is <em>at, </em>therefore this has to be correct.
Answer:
Protagonists aren't always good guys; bad characters can have their own central conflicts to resolve, too. or D
Explanation:
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