Brendan must give an oral presentation in 10 min, at the start of his class. In response to this “threat” ______.
A. Brendan’s parasympathetic nervous system becomes active
B. norepinephrine is secreted
C. Brendan’s pupils constrict
D. the activity of Brendan’s digestive system increases
Ans: B
B. norepinephrine is secreted
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