Correct Answer: (c) Indo-Aryan
Solution:Indo-Aryan are the largest lingustic group of India. People speaking Indo Aryan language came through North-western Mountains and got settled in the North West in Punjab and later in Gangatic plains. These were called as Aryans or Indo Aryans. They spoke Indo Iranian, Indo European or Sanskrit. Origin of Aryans is not clearly known, different scholars have different views on this point. It is said that Aryans lived in East of Alps (Eurasia), Central Asia, Arctic region, Germany, and Southern Russia.