I'm choosing column 4 because it develops my position in a central, strategic location without enabling my opponent's diagonal threat. My opponent has a dangerous diagonal with Xs at (0,5), (1,4), and (2,3) - if they can place at (3,2), they win. Playing in column 3 would let them complete this diagonal on their next move, so I must avoid that. Column 4 gives me good future potential while keeping me safe from immediate threats.