Which of the following language is NOT a classical language ?

The correct answer is Hindi.

Explanation:

In India, the status of a "Classical Language" is granted by the Ministry of Culture to languages that have a rich heritage, independent literary tradition, and high antiquity of early texts/recorded history spanning over 1,500 to 2,000 years.

Let us look at the languages listed in the options and their classical status timelines:

1. Tamil: Declared as a Classical Language in 2004 (the first language in India to receive this status).

2. Sanskrit: Declared as a Classical Language in 2005.

3. Telugu: Declared as a Classical Language in 2008.

Hindi, while being one of the official languages of India and widely spoken, is not classified as a Classical Language under the official guidelines.

Therefore, Hindi is NOT a classical language among the given options.