Answer:
The cost of health care will decrease.
Explanation:
When people live longer, the number of elderly people increases. Therefore, an increase in demand for complementary elderly services and products is bound to increase.
Having a larger target group, pharmaceutical companies will have a bigger incentive to innovate in the geriatric medicine segment.
On the other hand, health care price is an independent variable in this example, as the rise in the number of elderly people doesn't influence the general health care price.