Select the correct answer.
What role does the dialogue play in this passage?
The detective finished his conversation with Rob and turned to Rob's wife, Nellie.
"Ms. Reeves," said the detective. "Would you like to add anything to what your husband said about his co-worker Mr. Pack?"
Nellie had only met Mr. Pack once, at a Thanksgiving dinner. But she remembered him clearly.
"Mr. Pack didn't seem like a very cheerful person," said Nellie. "He carried this dark cloud over him. He kept to himself and didn't mingle with
anyone. And there was one really odd thing about him. He would talk to himself whenever he thought no one was looking."
A. It reveals information about Nellie.
B. It reveals the theme of greed and corruption.
C. It advances the plot.
D. It reveals the character traits of Mr. Pack.