Which of the following is a condition that can cause hypotension?

Hypotension, or low blood pressure, can result from various conditions, one of which is blood loss. When significant blood loss occurs, the volume of blood in the circulatory system decreases, leading to reduced pressure within the blood vessels. This drop in blood volume results in insufficient blood flow to vital organs, which can be critical and may cause symptoms such as dizziness, fainting, or shock.

In contrast, stimulants typically increase blood pressure due to their effect on the cardiovascular system by enhancing heart rate and constricting blood vessels. High sodium intake generally raises blood pressure because it leads to fluid retention, which increases blood volume. Intense physical activity can temporarily lower blood pressure right after exercise, but in general, it usually causes an increase in heart rate and blood flow, which can improve blood pressure. Therefore, blood loss is the primary condition among the options that can directly lead to hypotension.