Final answer:
B) Hypovolemia. The most likely cause of the patient's hypotension is hypovolemia.
Step-by-step explanation:
The patient's hypotension is likely caused by hypovolemia. Hypovolemic shock occurs when there is a decrease in blood volume, which can be caused by hemorrhage, severe vomiting or diarrhea, burns, or excessive urine loss. Symptoms of hypovolemic shock include a rapid heart rate, weak pulse, cool and clammy skin, rapid shallow breathing, thirst, and dry mouth. Treatment typically involves providing intravenous fluids to restore blood volume and raising blood pressure with medications like dopamine, epinephrine, and norepinephrine.