The regions in India have been categorized into floristic regions on the basis of the flora found in this region. Clarke divided the regions among Asia into 6 floristic regions. Later, in 1907, Hooker divided the regions in India into 8 regions. These 8 regions include,
Eastern Himalaya, Western Himalaya, Indus plain, Ganga plain, Deccan region, Malabar region, Maldives and Burma.
Thus, the correct answer is option D.