Option (D) is correct because the textbook explicitly states that 'The subduction zone along the Himalayas forms the northern plate boundary in the form of continent—continent convergence.' The Indian plate (which includes Peninsular India) converged with the Eurasian plate (both continental plates) to form the Himalayan mountains. This is a classic example of continent-continent convergence where two continental plates collide, leading to the formation of fold mountains.