The Lahore Session of the Indian National Congress (1929) is very important in history because the Congress passed a resolution demanding complete independence.

The Lahore Session of the Indian National Congress was held on December 31, 1929, and it is a significant event in the Indian freedom struggle. The most important outcome of the session was the adoption of the historic resolution on complete independence or "Purna Swaraj." The resolution declared that January 26, 1930, would be celebrated as Independence Day, and the Congress would launch a civil disobedience movement to achieve complete independence from British rule.

However, the rift between the extremists and moderates was not resolved in that session, and a resolution rejecting the two-nation theory was not passed in that session.

Therefore, the correct answer is option 1 only.