What part of a vertebrate's brain is the center for thinking and complex behaviors?

Imagine that you are talking with one of your friends about your biology course. he states that the somatic nervous system is subdivided into sympathetic and parasympathetic components, and is responsible for involuntary responses. is this statement correct? yes, this statement is correct. the somatic nervous system has both sympathetic and parasympathetic components and controls involuntary responses. no, although the somatic nervous system does have both sympathetic and parasympathetic subdivisions, it is responsible for voluntary responses. no, the somatic nervous system is responsible for voluntary responses, and is not subdivided into sympathetic and parasympathetic components. no, although the somatic nervous system controls involuntary responses, it is the autonomic nervous system that is subdivided into parasympathetic and sympathetic components.