What is an description of hindu kush mountain, indus river, and thar desert
( those are the physical features ).

For the Hindu Kush , it is a vast mountain range that stretches across the Afghan-Pakistan border , the Indus River is the major most south flowing river and longest river in Asia . And lastly for the Thar desert , it is a large, arid region in the Indian subcontinent that is a natural boundary between India and Pakistan.

The answer b is correct this all occurred during the red scare