Which of these conditions can cause shock?

Dehydration is a significant condition that can lead to shock because it results in a decrease in blood volume. When the body loses more fluids than it takes in—through sweating, vomiting, diarrhea, or inadequate fluid intake—this can lead to hypovolemic shock. In this state, there is insufficient blood flow to vital organs, which can cause severe complications if not addressed promptly. The body requires adequate blood volume to maintain circulation and deliver oxygen to tissues; thus, dehydration directly impacts this critical function.

In contrast, while excessive sleep, acne, and chronic fatigue can affect overall health and well-being, they do not cause shock. Excessive sleep may lead to other health issues but does not typically result in an emergency life-threatening condition like shock. Similarly, acne is a skin condition with no direct link to shock, and chronic fatigue may contribute to an individual's overall health status but does not induce shock on its own. Therefore, dehydration stands out as the direct cause of shock among the listed conditions.