The mood you go to sleep in can affect what you dream about
The answer to your question would be a joint
It would most likely depend on what health issue the person has. for example if you have sugar diabetes you try to control your blood sugar through diet, medication, or insulin. So I would say a most common precaution for people with health issues would be staying away from whatever causes their health issue to react.
Answer:
D: by forming groups involved in risky behaviors
Explanation: