I'm choosing column 3 for several strategic reasons: 
1. Playing here will build a vertical stack of my pieces (O), creating a vertical threat that my opponent will need to address.
2. Column 3 is a central position which typically offers more winning opportunities in Connect Four.
3. By continuing to strengthen my presence in the middle of the board (columns 3-4), I'm setting up potential winning paths both vertically and diagonally.
4. This move doesn't give my opponent any immediate threats or winning opportunities.
5. Central control is especially important in the early game, as it provides more flexibility for creating connecting lines in multiple directions.