I think the answer is the epicentre
The biggest doubling time of all the regions/continents in the world has Europe.
Europe is the only continent that has almost 0% population growth (as of 2014), which practically means that with this pace Europe will need an eternity to be able to double its population, so it makes it the continent with the biggest time needed to double it's population.
Hey You!
I believe True would be the better answer to this question.
It would be A, because if ur flying u would be gain and ur also losing some but it would be A
A) Ecuador it’s just west off the coast of Ecuador as well to help you remember