Answer:
A) To provide oxygen to the person's lungs.
Well, without medical care humans would literally die of so many infections and diseases, we would already be on the brink of extinction. Think of the Ebola outbreak, the black flu, Hiv's. Without the help of medical care, we would not be able to sufficiently prevent sickness.<span />
I would say A as the answer.
Maybe you can use your own ways that you do to reduce like taking a walk,watching a movie , organizing your closet , read a book , listen to music. etc
Answer A. Is the correct answer as this is the only option involving physical health.
Hope this helps!