Explanation:

Here’s the thing—let’s walk through those options:

- Option 1: Article 301—This actually deals with freedom of trade, commerce, and intercourse throughout India. Nothing to do with services like IAS or IPS.

- Option 2: Article 307—That’s about the appointment of an authority for guiding and directing the implementation of trade and commerce provisions. Again, not our answer.

- Option 3: Article 292—This one’s focused on the borrowing powers of the Government of India. Totally unrelated.

- Option 4: Article 312—Here’s where it clicks. This article allows Parliament to create All India Services, including the Indian Administrative Service (IAS) and the Indian Police Service (IPS). That’s exactly what the question asks.

So, you picked option:4- Article 312.

In short, Article 312 is the constitutional key for these services. The others address totally different areas.