Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): Tropical regions have higher biodiversity as compared to other regions of earth.
Reasons (R): Tropical regions have older communities and they get more time for development and speciation as compared to other regions of earth.
In the light of the above Statements, choose the most appropriate answer from the options given below