I'm choosing column 4 because it starts building a horizontal connection with my existing piece at position (5,3). This creates a potential two-in-a-row horizontally that I can expand on in future moves. The center region of the board also offers more strategic value as it provides more potential winning paths (horizontally, vertically, and diagonally). There are no immediate threats from my opponent that I need to block, so I'm focusing on developing my position with good future potential.