Answer:
I believe the detail that best supports the inference is:
D. When he first hears the moor's silence broken, he was exultant.
Explanation:
The inference states that Holmes was expecting something to appear on the moor. If he was expecting it, he would probably be happy, excited to hear a noise, since it would be proof that he was right, that something was indeed going to show up. That's why the detail "When he first hears the moor's silence broken, he was exultant" is the best to support such inference. It mentions Holmes's reaction - a reaction that confirms his expectation. Had he not expected anything to appear, he would not have been exultant, but would have been scared or surprised instead.
Answer:
it creates dramatic tension.
Explanation:
Often the authors use the thoughts and words spoken by the characters to create a dramatic tension in the story. For example, a character may be experiencing a terminal illness and he is very worried, sad and hopeless, but when someone asks how he is he smiles and says that he is great. This creates a dramatic tension in the story because the reader knows what is happening and what the character says is different than what he is thinking.