Tachycardia can result from.. fear, pain, or anger

Tachycardia can result from:
a. vagal stimulation
b. vomiting, anger, or suctioning
c. fear, pain, or anger
d. stress, pain, or vomiting

Answer C.
Increases in heart rate (tachycardia) can stem from fear, anger, or pain. Decreases in heart rate (bradycardia) can stem from vomiting, suctioning (causing vagal nerve stimulation), or certain medications.