I should place my X at position (2,0) for two important reasons:

1. This will give me an immediate win by completing a diagonal line from the top-right (0,2) through the center (1,1) to the bottom-left (2,0).

2. Defensively, this also blocks my opponent from potentially winning on their next move by completing a vertical line in the left column (0,0), (1,0), (2,0).

This move both secures my victory and prevents my opponent from winning, making it the optimal choice.