● Chief Electoral Officer is authorised to supervise election in the state and union territories. ◦ The Election Commission of India nominates an officer of the Government of state/union territory as Chief Electoral Officer in consultation with that government. Hence pair 1 is not correctly matched . ● Returning Officer is responsible for the conduct of the election in the parliamentary or assembly constituency. ◦ Election Commission nominates an officer of the Government of State or Union territory as Returning Officer for each assembly and parliamentary constituencies. Hence statement 3 is not correctly matched . ● Election Registration Officer is responsible for the preparation of electoral rolls for assembly or parliamentary constituencies. Hence pair 2 is correctly matched . He is also appointed by the Election Commission after consultation with concerned state and Union territory governments.