The correct answer is option 'D', which means that Articles 343 to 351 of the Constitution of India contain provisions pertaining to the official language. Let's understand each of these articles and their significance in detail.

1. Article 343: Official language of the Union
- This article declares that Hindi in the Devanagari script shall be the official language of the Union government.
- However, English may continue to be used for official purposes until a resolution is passed by Parliament for its discontinuation.

2. Article 344: Commission and Committee of Parliament on official language
- This article establishes a Commission and a Committee of Parliament on official language.
- The President appoints a Commission every ten years to make recommendations regarding the use of Hindi as the official language.
- The Committee of Parliament on official language examines the recommendations of the Commission and submits its report to the President.

3. Article 345: Official language or languages of a State
- This article empowers each state to adopt its own official language(s) for use within the state.
- The state legislature has the authority to decide the language(s) to be used for official purposes in the state.

4. Article 346: Official language for communication between one state and another or between a state and the Union
- This article states that the language(s) to be used for communication between states or between a state and the Union shall be determined by the President.
- The President can specify either Hindi or English or both for such communication.

5. Article 347: Special provision relating to the language spoken by a section of the population of a State
- This article allows the Governor of a state to issue directions for the use of any language spoken by a section of the population in that state for official purposes.
- These directions are typically issued when a substantial population of a state speaks a language other than the official language of the state.

6. Article 348: Language to be used in the Supreme Court and in the High Courts and for Acts, Bills, etc.
- This article specifies that the language to be used in the Supreme Court and the High Courts shall be English.
- Acts, Bills, and other official documents are also required to be translated into the official language of the state, if necessary.

7. Article 349: Special procedure for enactment of certain laws relating to language
- This article provides a special procedure for the enactment of laws relating to the language(s) spoken by a section of the population in a state.
- These laws require the President's approval before being introduced in the state legislature or Parliament.

8. Article 350: Language to be used in representations for redress of grievances
- This article ensures that every person has the right to submit a representation for the redress of grievances to any officer or authority of the Union or a state in any of the languages used in that area.

9. Article 351: Directive for the development of the Hindi language
- This article directs the Union government to promote and develop the Hindi language so as to serve as a medium of expression for all the elements of the composite culture of India.

Thus, Articles 343 to 351 of the Constitution of India contain provisions pertaining to the official language, covering various aspects such as the official language of the Union, official languages of the states, language in courts, language for communication between states, and more.