Answer:
If air is polluted, the air contains harmful gases and health status become poor. In contrary, if environment is clean and fresh, the health will be good. Therefore, health, population and environment education are interrelated in physical aspect. Health, population and environment are integrated terms.
For this question it depends on each family and on the patient themselves. I suggest finding and talking to people with bipolar disorder and hear their experiences.
The answer is D, improves strength