Since my opponent has taken the center position (1,1), I'll place my first O in the top-left corner (0,0). This is a strong strategic response to a center opening, as it gives me potential winning lines along the top row, left column, and even sets up a potential fork scenario. Taking a corner rather than an edge position provides more opportunities for creating multiple threats in future moves. While my opponent has blocked the main diagonal with their X in the center, my corner play still maximizes my strategic options.