What effect does exercise have on the nervous system? A. Prolonged exercise degenerates the nervous system. B. Increased blood flow reduces nerve sensitivity. C. Repetitive motion develops nerves and nerve endings. D. Higher body temperature impairs nerve message transmissions.

The question is asking about the effects of exercise on the nervous system. Let's analyze each option:<br /><br />1. Option A suggests that prolonged exercise degenerates the nervous system. This is not accurate. While excessive exercise without proper rest and recovery can lead to overtraining and potential nervous system issues, moderate and balanced exercise is beneficial for the nervous system.<br /><br />2. Option B states that increased blood flow reduces nerve sensitivity. This is also not accurate. Increased blood flow during exercise actually delivers more oxygen and nutrients to the nervous system, which can enhance nerve function and sensitivity.<br /><br />3. Option C claims that repetitive motion develops nerves and nerve endings. This is the most accurate statement. Exercise, especially activities that involve repetitive motion, can stimulate the growth and development of nerves and nerve endings. This can lead to improved coordination, balance, and overall nervous system function.<br /><br />4. Option D suggests that higher body temperature impairs nerve message transmissions. This is not accurate. While extreme temperatures can have adverse effects on the body, moderate increases in body temperature during exercise do not impair nerve message transmissions.<br /><br />Based on the analysis, the correct answer is option C, as it accurately describes the positive effects of exercise on the nervous system.