Step 1: Understanding the Correct Preposition
The correct preposition here is "on," because when describing the position of a door relative to a person, it is most natural to say "the door closed on him."
Step 2: Evaluating the Other Options
- "Beneath" (Option A) would imply something below him, but the context suggests the door is closing in relation to his position.
- "Between" (Option B) would only apply if the door were closing between two entities, which is not the case here.
- "Amidst" (Option C) typically refers to something being surrounded by other things, which doesn’t fit in this context.
Step 3: Conclusion
Thus, the correct preposition is "on," making the sentence: "The door closed on him."