The correct answer is 6. Explanation & Key Takeaways: • The Indian Plate, the northern section of the Indo-Australian Plate, constitutes the Indian subcontinent's continental crust. Natural arrangement distinguishes physical divides. • On the basis of the various physiographic features, India is categorised into six physiographic divisions: Northern and North-eastern Mountain; Northern Plain; Peninsular Plateau; Indian Desert; Coastal Plains; and Islands. Related Concepts: • The Deccan plateau, which encompasses an area of around 16 lakh square kilometres, is India's largest and oldest physiographic division. • India's physiography is varied. It features a variety of geographical formations and climates. In India, there are hills, plateaus, plains, coastlines, and deserts. The Himalayas and its branches may be found in the north and north-east.