Step 1: Understanding the Question:
The question asks to identify the specific article of the Indian Constitution that establishes the Parliament for the Union.
Step 2: Analyzing the Relevant Articles:
Article 79 (Constitution of Parliament): This article explicitly states, "There shall be a Parliament for the Union which shall consist of the President and two Houses to be known respectively as the Council of States and the House of the People." This directly matches the statement in the question. The Council of States is the Rajya Sabha, and the House of the People is the Lok Sabha.
Article 19A: There is no Article 19A in the Constitution of India. Article 19 deals with the protection of certain rights regarding freedom of speech, etc.
Article 356: This article deals with the provisions in case of failure of constitutional machinery in states, commonly known as President's Rule. It is related to emergency provisions, not the constitution of Parliament.
Article 135 (d): Article 135 deals with the jurisdiction and powers of the Supreme Court under pre-existing law. There is no sub-clause (d) to this article, and it is unrelated to the Parliament's establishment.
Step 3: Final Answer:
The correct article that states "there shall be a parliament for the union" is Article 79.