Which detail from "To Save a Turtle" is part of the middle of the story?

a)Quentin looked like a giraffe. His neck was long and thin, and so were his arms and legs.
b)Going undercover always meant telling lies, and she didn’t like lying to people she liked.
c)The last piece of the puzzle had dropped into place when Quentin had offered to take the midnight shift.
d)Fortunately, she was there in time to see that the baby turtles would hatch. It really wasn’t such a bad job, after all.