The answer would be A because a smaller population would die out faster. The best answer is A because they are more diverse which mean everyone is least likely to get the disease.
The forces beneath the earths crust that makes volcano's erupt is Magma and the rocks around it, which both make its way up to a volcano by going through the cracks of the Earth's crust, when making their way up they release pressure that causes a volcano to erupt.
Geology, Meteorology, Oceanography, and Astronomy<span />