Healthcare costs will rise in the future because
a.
a large group of people will become senior citizens
b.
healthcare providers will charge more for certain types of patients
c.
all medicine will become generic and easily accessible
d.
doctors will refuse to see patients who can't pay in cash

A

Explanation:

Since the birth rate is getting lower and lower, in many developed countries like France (1.96 births/woman), Italy (1.35 births/woman), Japan (1.44 births/woman), as well as other developing countries Brazil (1.73), Thailand (1.48)* that are starting to decrease its birth rate. Subsequently, the number of elderly people is growing and growing faster than the addend of the children, within the population.

In addition to this, the rate of children per couple is also decreasing, mostly couples with 1 or 2 kids. And the longevity grows. So definitely, it's A.

*According to WorldBank