Answer :
A person's blood pressure may fall for a variety of reasons. Some common causes include dehydration, low blood sugar, and blood loss. If a person's blood pressure falls, they may experience dizziness, lightheadedness, or fainting.
When a person's blood pressure falls, the person's heart rate will usually increase in order to compensate for the lower blood pressure. The person may also feel dizzy or lightheaded due to the reduced blood flow to the brain. The person's skin may become clammy due to the reduced blood flow to the extremities. Shock is also a common example of blood pressure to drop. A person's heart rate would likely increase if their blood pressure fell.
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A. The person's heart rate will increase.
B. The person's blood vessels will constrict.
C. The person will feel dizzy or lightheaded.
D. The person will feel more alert.
E. The person's breathing will become shallow.
F. The person's skin will become clammy.