Answer:
The change in demographics observed in developed countries in the twenty-first century was falling birth rates and longer life expectancy. Option B is correct.
The world population is growing further slowly than it used to since birth rates have been reduced in numerous countries. At the same time, life expectancies have increased considerably.
In more than 80 countries, the birth rate is below the level of 2.1 children per woman.
This is part of an answer someone had to this same question.
The best words would be cruel and heartless hope this helps
Are you in BAVEL? Anyways, I haven't read your module for this or what ever so I'm gonna go off of my head and you could change it or whatever. Also is this a argumentative essay or is it a informative essay???