B. engage in regular physical activity and get in the habit of eating food that is high in nutrients.
Answer: I would say that things like making all factories run on elctricity and not smoke and let it come from the top.
Explanation:This will help because it will reduce smoke/co2 in the air. PS don't put this I'm not completely sure u will get it. Put something like my idea, research what makes the most co2 and say to make it electric
I would say a. Unintentional
Keep the body part below the level of the heart to improve blood flow in the compartment. Limiting physical activities to low impact if any. Apply ice to the affected area after exercising, massage if great for any condition