Final answer:
The brachial artery is the pulse site typically used while taking blood pressure, as it allows for an accurate measurement when the cuff inflates above systolic pressure and is monitored until it aligns with diastolic pressure.
Step-by-step explanation:
The pulse site used while taking a blood pressure is typically the brachial artery. When measuring blood pressure, an inflatable cuff is put over the upper arm, and the stethoscope is placed in the arm's crease, where the brachial artery runs close to the surface. The cuff is inflated to a pressure higher than the systolic pressure, and monitored until it falls to the diastolic pressure to obtain blood pressure readings. Other pulse sites include the radial artery in the wrist or the common carotid artery in the neck, but the brachial is used for blood pressure. This technique and location assure that the pressure measured reflects the true blood pressure as it circulates in the arteries. The correct answer for the pulse site used when taking a blood pressure is C. Brachial.