The correct answer is: B. Official Language
Part XVII of the Constitution of India deals with Official Language. It contains 10 Articles, from Article 343 to 351.
Article 343 deals with the Official Language of the Union. It states that the official language of the Union shall be Hindi in Devanagari script.
Article 344 deals with the use of Hindi and English in the Union Parliament and the State Legislatures. It states that Hindi shall be the official language for all the purposes of the Union Parliament and the State Legislatures, but English may also be used for all or any of the purposes of those bodies.
Article 345 deals with the use of Hindi and English in the subordinate courts and other authorities. It states that Hindi shall be the official language for all or any of the purposes of the subordinate courts and other authorities, but English may also be used for all or any of those purposes.
Article 346 deals with the power of the President to make regulations for the use of Hindi and English in the Union and the States. It states that the President may make regulations for the use of Hindi and English in the Union and the States, and for the transition from English to Hindi.
Article 347 deals with the special provision for the use of English in the State of Jammu and Kashmir. It states that the English language may be used for all or any of the purposes of the State Government and the State Legislature of Jammu and Kashmir, notwithstanding anything in Article 343, 344, 345 or 346.
Article 348 deals with the power of the President to authorise the use of Hindi in the Supreme Court and in the High Courts. It states that the President may, by order, authorise the use of Hindi in the Supreme Court and in the High Courts, and may also authorise the use of Hindi in the subordinate courts and other authorities.
Article 349 deals with the power of the President to authorise the use of Hindi in the proceedings of Parliament and the State Legislatures. It states that the President may, by order, authorise the use of Hindi in the proceedings of Parliament and the State Legislatures, and may also authorise the use of Hindi in the subordinate courts and other authorities.
Article 350 deals with the special provision for the use of Hindi in the Union territories. It states that the Hindi language may be used for all or any of the purposes of the Union territories, notwithstanding anything in Article 343, 344, 345 or 346.
Article 351 deals with the directive principles of State policy relating to the development of the Hindi language. It states that it shall be the duty of the Union to promote the spread of the Hindi language, and to develop it so that it may serve as a medium of expression for all the elements of the composite culture of India and for scientific and technological advancement.
The other options are incorrect because they are not covered by Part XVII of the Constitution of India.