The Client Tells the Nurse That She Is Interested in the Human

The client tells the nurse that she is interested in the human brain, and questions which parts of the brain control anxiety and insomnia. What is the best reply by the nurse?

A) "The limbic system and hypothalamus."
B) "The frontal lobes and limbic system."
C) "The thalamus and reticular activating system."
D) "The limbic system and reticular activating system."