Final answer:
The human physiological response to fear includes increased heart rate, dilated pupils, and increased breathing.
Step-by-step explanation:
a) Increased heart rate: When a person experiences fear, their heart rate typically increases as part of the physiological response. This is because the body releases adrenaline, which increases heart rate and prepares the body for action.
b) Dilated pupils: Fear can cause the pupils to dilate, allowing more light to enter the eyes and improving visual information processing. This can help the person to better assess the situation.
d) Slowed breathing: In contrast to the other options in the question, fear actually leads to increased, not slowed breathing. When a person is afraid, their breathing becomes faster and more shallow to take in more oxygen and prepare the body for the fight-or-flight response.