Tropical Latitudes Have Not Experienced the Large Number of Ice

Multiple Choice

Tropical latitudes have not experienced the large number of ice ages experienced at higher latitudes.Instead, their climates have remained moderate and stable.This provides evidence for which hypothesis related to latitudinal species diversity patterns?

A) Productivity
B) Species diversification rate
C) Species diversification time
D) Both productivity and species diversification rate
E) Both productivity and species diversification time