Under which Article of the Indian Constitution are special provisions provided to language spoken in a section of the population?

Article 347

The correct answer is Option 2 - Article 347

Special provisions for languages spoken by a section of the population in India are provided under Article 347 of the Indian Constitution.
This article states that on a demand being made, the President of India can recognize a language spoken by a substantial proportion of the population of a state for official purposes within that state or a part of it.