The __ nervous system is responsible for responses such as pupil dilation, increased heart rate, and increased respiration. A sympathetic B autonomic C parasympathetic D ) somatic

## Step 1<br />The question is asking about the part of the nervous system that is responsible for certain involuntary responses such as pupil dilation, increased heart rate, and increased respiration. These responses are typically associated with the body's "fight or flight" response, which is a physiological reaction to perceived harmful events, attacks, or threats to survival.<br /><br />## Step 2<br />The options provided are:<br />A) Sympathetic<br />B) Autonomic<br />C) Parasympathetic<br />D) Somatic<br /><br />## Step 3<br />The sympathetic nervous system is a part of the autonomic nervous system that is responsible for the body's "fight or flight" response. It is the part of the nervous system that is activated in response to stress or danger, and it is responsible for the physiological changes that occur in the body in response to these stimuli.<br /><br />## Step 4<br />The parasympathetic nervous system is another part of the autonomic nervous system, but it is responsible for the body's "rest and digest" response, which is the opposite of the "fight or flight" response.<br /><br />## Step 5<br />The somatic nervous system is responsible for voluntary movements, such as those controlled by skeletal muscles.<br /><br />## Step 6<br />The autonomic nervous system is a part of the nervous system that controls involuntary bodily functions, such as heart rate, digestion, and respiratory rate.<br /><br />## Step 7<br />Given the options, the sympathetic nervous system is the most accurate answer because it is the part of the nervous system that is responsible for the "fight or flight" response, which includes pupil dilation, increased heart rate, and increased respiration.