The answer would be "I see these sights".
Hope this helped :).
When Lady Macbeth dies, he feels nothing, he is emotionless. That might tell us that she has turned him into a ruthless killer, who will stop at nothing to get what he wants, and what he wants is the kingdom. He is very calm, as if he doesn't care at all that his wife died - she has turned him into a mad monster. He has lost all ability to feel, at least until he finishes what he has started.
Answer:
It reveals character personality details. It allows one character to speak alone. It allows characters to be silent for a while. It demonstrates action instead of speech.
Explanation: