Answer: D. Poor people care less about their health.
Step-by-step explanation:
Exercise is a physical activity which regulates the movement of the muscles providing them elasticity and flexibility, controls the activity of respiratory and circulatory system.
Among the options given, D. Poor people care less about their health. is the correct option. As the lifestyle of poor individuals is restricted to their occupation which requires more labor and mental strain. Thus they do not care about their health, they do not practice exercise or do not take measures to improve their health.