Explanation:

- Chapter II of the Constitution of India specifically deals with the Parliament.

- It covers articles related to the structure, composition, and functioning of both houses of Parliament, i.e., Lok Sabha and Rajya Sabha.

- Articles in this chapter explain legislative procedures, powers, and responsibilities.

- Chapter I primarily deals with the Union and its territory.

- Chapter III focuses on the fundamental rights of the citizens of India.

- Chapter IV relates to the Directive Principles of State Policy, outlining principles for governance.

- Option 3, Chapter II is indeed the correct answer for where the articles of Parliament are discussed.