The bed was good, and the pajamas of the softest silk, and he was tired in every fiber of his being, but nevertheless Rainsford could not quiet his brain with the opiate of sleep. He lay, eyes wide open. Once he thought he heard stealthy steps in the corridor outside his room. He sought to throw open the door; it would not open. He went to the window and looked out. His room was high up in one of the towers. The lights of the chateau were out now, and it was dark and silent, but there was a fragment of sallow moon, and by its wan light he could see, dimly, the courtyard. There, weaving in and out in the pattern of shadow, were black, noiseless forms; the hounds heard him at the window and looked up, expectantly, with their green eyes. Rainsford went back to the bed and lay down. By many methods he tried to put himself to sleep. He had achieved a doze when, just as morning began to come, he heard, far off in the jungle, the faint report of a pistol.

Naomi is writing an essay about "The Most Dangerous Game.” Which detail from the excerpt best supports her idea that Rainsford feels agitated?

. . . nevertheless Rainsford could not quiet his brain with the opiate of sleep. He lay, eyes wide open.
He sought to throw open the door; it would not open. He went to the window and looked out.
. . . the hounds heard him at the window and looked up, expectantly, with their green eyes. Rainsford went back to the bed and lay down.
He had achieved a doze when, just as morning began to come, he heard, far off in the jungle, the faint report of a pistol.