Concept:Andhra Pradesh was created by merging Andhra State with Telugu-speaking regions of Hyderabad State under the States Reorganisation Act of 1956.Explanation:Andhra State was formed on 1 October 1953 from Madras State.Later, on 1 November 1956, the States Reorganisation Act merged Andhra State with the Telugu-speaking areas of Hyderabad State to form Andhra Pradesh.Thus, the state of Andhra Pradesh as we know it was officially formed in 1956.Answer:A. 1956