Concept:The formation of Andhra Pradesh as a state under the States Reorganisation Act occurred on 1 November 1956, when Andhra State (created in 1953) merged with the Telugu‑speaking regions of Hyderabad State.Explanation:Andhra State was formed on 1 October 1953 from the Telugu‑speaking areas of Madras State. Later, on 1 November 1956, the States Reorganisation Act created the larger state of Andhra Pradesh by combining Andhra State with the Telugu‑speaking parts of Hyderabad State. Therefore, the official formation of Andhra Pradesh as we know it today is 1956.Answer:1956 (Option A)