Question

what is an effective way to take care of your immune system?
exercising less
lowering stress levels
all of these
eating foods high in sugar

Explanation:

Exercising less is not beneficial for the immune - system. Eating foods high in sugar can have negative impacts on health and the immune system. Lowering stress levels helps in maintaining a healthy immune system as stress can suppress the immune response.

Answer:

B. Lowering stress levels