Explanation:

- The first session of the Constituent Assembly of India took place on December 9, 1946.

- The session was a significant event as it marked the beginning of the process of framing the Constitution of India.

- Option 1: Bombay - Bombay, known today as Mumbai, was a prominent city during the British Raj but was not where the session was held.

- Option 2: Lahore - Lahore, now in Pakistan, was an important city during British India, but not relevant for this event.

- Option 3: Calcutta - Calcutta, currently Kolkata, was a major city and former capital of British India but not the location for this assembly session.

- Option 4: New Delhi - The correct answer is New Delhi. It was the location for the first session and remains the capital of India.