A nurse is speaking with a client who has schizophrenia when he suddenly seems to stop focusing on the nurse's questions and begins looking at the ceiling and talking to himself. Which of the following actions should the nurse take?

a) Ask the client if he's seeing or hearing something.
b) Redirect the client's attention to the conversation.
c) Document the behavior as a sign of disorientation.
d) Leave the room to give the client privacy.