Answer:
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
