Which brain structure regulates the sympathetic and parasympathetic branches of the autonomic nervous system? the amygdala the hippocampus the thalamus the hypothalamus?

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.