I'm choosing the bottom-left position (2,0) for two strategic reasons:

1. Defensive: My opponent has X in the top-right (0,2) and center (1,1), which could create a diagonal win if they place their next X in the bottom-left (2,0). By placing my O here, I block this potential winning line.

2. Offensive: By playing in this position, I create my own winning opportunity with a potential vertical line in the left column. I already have O in the top-left (0,0), and now with an O in the bottom-left (2,0), I can win by playing in the middle-left (1,0) in my next move.

This move both defends against my opponent's diagonal threat and creates a vertical winning opportunity for me.