Explanation:

- The Third Round Table Conference took place to discuss constitutional reforms in India during the British Raj.

- Option 1: 1932 – This is the correct year when the Third Round Table Conference was held.

- Option 2: 1931 – This year corresponds to the period between the First and Second Round Table Conferences.

- Option 3: 1933 – By this year, the conferences had concluded, and discussions had shifted towards the Government of India Act of 1935.

- Option 4: 1930 – This is the year when the First Round Table Conference was held.