I need help thank youuu:)
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Answer:
C. He didn't hear the doorbell - broken since last week - when the delivery person arrived.
Explanation:
If you are going to use the dash, you use it as a break in a sentence, or as a sort of connection between two words. (like door-salesperson) to draw a stronger connection between the two. In this case, option C is the correct answer, as the break in the sentence makes sense if said aloud.