Statement (s ) `:` Populations of a species inhabiting different geographical areas are in a continuous process of adaptation to their surrounding environments and this leads to the evolution of species.
Reason (R ) `:` Geographical barriers obstruct interbreeding of populations of a species leading to reproductive isolation and evolution of new species.

Options

A. Both (S ) and (R ) are not true
B. Only (S ) is true but not (R )
C. Both (S ) and (R ) are true but (R ) does not explain (S )
D. Both (S ) and (R ) are true and (R ) is the correct explanation of (S )

Answer

D