Which of the following Amendment Acts of the Constitution of India conferred statehood to Goa and formed a new union territory comprising of Daman and Diu?

56th Amendment Act

The correct answer is Option 1 - 56th Amendment Act

The Amendment Act that conferred statehood to Goa was the 56th Amendment Act of 1987 after which Daman and Diu became Union territories.

December 1961: India acquired Goa, Daman and Diu from Portugal.
12th Amendment Act of 1962: This act formally incorporated all three territories (Goa, Daman and Diu) as a single union territory under the Indian Constitution.
May 1987: Goa was granted statehood through the 56th Amendment Act.
Since May 1987: Following Goa becoming a state, Daman and Diu remained as a separate union territory.