Read the excerpt from "To Save a Turtle." Four hours later, Pamela took over for Russell. By the time Quentin took over for Marnie, it was after midnight. When Marnie got back to camp, it was very quiet, and the rest of the volunteers lay in their camp beds, all apparently fast asleep. Moments after Marnie got into her bed, though, Brenda got out of hers. She pulled a jacket on over her pajamas and went very quietly out of the big sleeping room. Then she started down the trail to the beach. The moon was full and bright, and she could easily see where she was going.

What is the most important detail from this excerpt?

It is after midnight by the time Quentin takes over.
Brenda follows Quentin down to the beach.
The moon is full and lighting up the dark night.
All the volunteers are lying quietly in their beds.