Final answer:
The cop greets Mr. Green in a polite and friendly manner.
Step-by-step explanation:
The subject of this question is English as it pertains to a scene from a play or novel. The question asks about the actions and dialogue between Mr. Green and the cop at the front door.
The answer is d) The cop greets Mr. Green. In the scene, the cop says, 'Good evening, sir,' which is a polite greeting. This indicates that the cop is addressing Mr. Green in a friendly and respectful manner.