Answer:
C. many ethnic groups.
Step-by-step explanation:
Afghanistan is a region that has been populated and civilized for several thousands of years. In fact, it is the home of the first civilization that we know of: Mesopotamia. This means that the nation has a very long and complex history. The history of Afghanistan has brought many invaders to the region, and this has left a permanent mark in the characteristics of the population. Therefore, nowadays Afghanistan has many different ethnic groups.