The correct option is Kirthar Mountain.
Explanation
The Indian Plate is a major tectonic plate that includes Peninsular India and the Australian continental portions. Its boundaries are defined by specific geological features resulting from its interaction with the Eurasian Plate and other surrounding plates.
Boundary Analysis
- Northern Boundary: This is a continent-continent convergence zone marked by the Himalayas. It represents the collision interface between the Indian and Eurasian plates.
- Eastern Boundary: The eastern margin extends through the Rakinyoma Mountains (Arakan Yoma) in Myanmar. It continues southward towards the Andaman and Nicobar Islands and the Java Trench.
- Western Boundary: The western margin follows the Kirthar Mountain range in Pakistan. It further extends along the Makran coast and joins the spreading site from the Red Sea rift southeastward along the Chagos Archipelago.
Key Takeaway: The western boundary of the Indian Plate aligns with the Kirthar Mountain range, distinguishing it from the northern boundary (Himalayas) and the eastern boundary (Rakinyoma Mountains).