Which of the following is a physiological symptom of emotional and personal problems?

Chronic fatigue is indeed a physiological symptom commonly associated with emotional and personal problems. It represents a state of persistent tiredness and lack of energy that can affect an individual's ability to function both physically and mentally. This symptom often arises from prolonged stress, anxiety, or depression, which can drain an individual's energy levels, leading to a feeling of exhaustion that is not alleviated by rest.

In contrast, increased energy, enhanced focus, and improved sleep are typically associated with positive emotional states or effective coping mechanisms. Increased energy and enhanced focus can indicate a person is functioning well and managing stress effectively, while improved sleep suggests a state of overall well-being. Therefore, chronic fatigue stands out as a clear indicator of underlying emotional and psychological distress, making it the correct answer in this context.