To solve this problem, we need to determine which statements explain why tropical regions show the greatest level of species richness. Let's analyze each statement:$\newline \bullet$A. Tropical latitudes have remained relatively undisturbed for millions of years, hence more time was available for species diversification.$\newline$ - This statement is true. The stability of tropical regions over long periods has allowed for extensive species diversification.$\newline \bullet$B. Tropical environments are more seasonal.$\newline$ - This statement is false. Tropical environments are typically less seasonal compared to temperate regions.$\newline \bullet$