Two Physical Geographic Barriers Create the Boundaries of the South

Multiple Choice

Two physical geographic barriers create the boundaries of the South Asia population cluster are

A) the Himalaya Mountains to the north and the mountains west of the Indus River Valley in Pakistan.
B) the Indus River Valley and the Ganges River Valley.
C) the mangrove forests of Bangladesh and the Ganges River Valley.
D) the Himalaya Mountains to the north and the Ganges River Valley to the west.