Since my opponent has taken the center position (1,1), I'll place my O in the top-left corner (0,0). When responding to a center play, taking a corner is strategically strong as it prevents my opponent from immediately creating a diagonal threat. This position also gives me potential opportunities to create a fork later in the game (where I could have two winning paths simultaneously). The corners provide the most flexibility for creating winning patterns, and since all four corners are currently available, I'll start with the top-left.