I'm choosing position 0,2 (top-right) because it's the most critical defensive move. If I don't place my "O" there, my opponent could place an "X" in that position on their next turn, which would create a vertical line of three "X"s in the right column (0,2 - 1,2 - 2,2), giving them the win. By blocking this position, I prevent their immediate win opportunity. Additionally, this move gives me two "O"s in the top row, which could potentially set up a future winning opportunity.