Correct option is D
Inclusion in the Eighth Schedule enables a language to be used in official communication, UPSC exams, and Parliamentary proceedings.
Article 344 & 351 deal with the Eighth Schedule.
Konkani – Included (added by the 71st Amendment Act, 1992)
Languages recently added by the 92nd Amendment Act (2003): Bodo, Santhali, Maithili, Dogri.
There are ongoing demands for inclusion of more languages like Bhojpuri, Rajasthani, Tulu, and Ladakhi.