We’re in an early stage with one opponent piece at the bottom center and an otherwise empty board. Controlling the center is a strong strategy in Connect Four since it provides more winning possibilities via multiple lines (vertical, horizontal, and diagonal). Dropping our O in column 3 will place it directly above the opponent's X, securing a central position and setting up favorable opportunities for building future connections while not exposing us to an immediate threat. Therefore, the best move is to drop our piece in column 3.