Which of the following is the primary physiological cause of death in adults who drown?

• A. Sudden drop in blood glucose levels
• B. Excessive water absorption by the stomach
• C. Lack of oxygen leading to hypoxia
• D. Overproduction of red blood cells

Answer: (C)

Verified step by step guidance

1. Step 1: Begin by understanding the physiological process of drowning. Drowning occurs when water enters the respiratory system, preventing oxygen from reaching the lungs and bloodstream.
2. Step 2: Recognize the importance of oxygen in cellular respiration. Oxygen is essential for producing ATP (adenosine triphosphate), the energy currency of cells, through aerobic respiration.
3. Step 3: Define hypoxia. Hypoxia is a condition where tissues are deprived of adequate oxygen, leading to impaired cellular function and eventual cell death.
4. Step 4: Analyze the options provided. A sudden drop in blood glucose levels, excessive water absorption by the stomach, and overproduction of red blood cells are not directly related to the physiological cause of death in drowning. Lack of oxygen leading to hypoxia is the correct physiological explanation.
5. Step 5: Conclude that the primary cause of death in adults who drown is hypoxia, which results from the inability to breathe and transport oxygen due to water obstructing the airways.