Based on what you've noticed from observing the population statistics for countries of the world, what can you say about what is happening with population in general around the world? (select one of the answers below):
a.the population explosion is continuing world-wide
b.population is now showing a negative growth rate (reduction) in approximately 95% of the countries in the world
c.population is stable world-wide with total fertility rates equaling replacement-level fertility, neither growing nor shrinking significantly
d.some countries are still growing at a high rate, but other countries have total fertility rates well below replacement-level fertility