Which of the following are symptoms of hypothermia?

The symptoms of hypothermia primarily relate to the body's response to cold temperatures and the effects on the central nervous system. Shivering is one of the earliest responses to cold, as it generates heat through muscle activity. Drowsiness occurs as the body's core temperature drops, leading to a decrease in physical and mental activity. Behavioral changes can manifest as confusion or a lack of awareness of the situation, which is critical for recognizing the severity of the symptoms and seeking help.

This choice directly aligns with the physiological and psychological effects of hypothermia, making it the correct answer. Other options, while they may include symptoms that could relate to other conditions, do not accurately describe the specific symptoms associated with hypothermia.