The correct option is C Central-Asia
In the northern areas of modern India, the Harappan civilisation emerged during 3300 BCE. But by 1700 BCE, this civilisation came to an end. The Indus valley region was occupied by a new group of people; the Aryans. While their origin is debatable, many believe that the Aryans were descendants of a nomadic group of people living in Central Asia, around the Caspian Sea. From these regions, the Aryans migrated to various parts of the world. A number of these Aryan groups also migrated to India, who came to be known as the Indo-Aryans.