The language of Urdu emerged as a result of the interaction between two key languages:

Persian: Persian had a significant influence on the vocabulary and script of Urdu. It contributed many words, particularly those related to administration, culture, and arts.

Hindavi: Hindavi, a language spoken in the Indian subcontinent, provided the base and structure for Urdu. It was a language spoken by the people and incorporated elements of local languages.

The fusion of Persian and Hindavi, along with elements of other languages, led to the development of Urdu. Over time, Urdu evolved as a distinct language with its own script and literary tradition, and it played a significant role in the cultural and literary history of the Indian subcontinent.

So,the correct option is [2].