While outdoors, you drink plenty of water, take frequent breaks, and shed layers as you warm up. These are steps to prevent:

The correct answer is heat exhaustion. When spending time outdoors, especially during warmer weather or when engaging in physical activities like hunting, it's crucial to manage your body temperature and hydration. Drinking plenty of water helps replace fluids lost through sweat, thus preventing overheating. Frequent breaks allow your body to recover and cool down, which is essential in reducing the risk of heat-related illnesses. Shedding layers helps your body release heat efficiently, further mitigating the chances of developing heat exhaustion.

Heat exhaustion occurs when your body loses too much water and salt, often due to excessive sweating. Symptoms can include heavy sweating, weakness, dizziness, nausea, and an elevated body temperature. Taking preventive measures such as drinking water, resting, and adjusting clothing is vital for maintaining your body's normal functioning in hot environments.

In contrast, while hydration is also important for preventing dehydration, the symptoms and concerns associated with dehydration differ from those related to heat exhaustion. Fatigue can be addressed with rest, and hypothermia, though another serious condition, is typically associated with cold weather and prolonged exposure to cooler temperatures. Thus, the actions described in the question specifically target the prevention of heat exhaustion.