Sally has just heard a strange noise in her basement therefore the following which is an example of normal autonomic nervous system function during this type of situation is that Sally's heart rate increases preparing for possible activity which is therefore denoted as option A.
This is referred to as a part of the peripheral nervous system that regulates involuntary physiologic processes such as heaert rate, respiration etc.
In a scenario where she is frightened by the noise then the heart rate is usually increased so as to prepare the individual for the possible activity needed.
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