I'm choosing column 2 which is adjacent to my opponent's piece. This gives me a few advantages:
1. It starts building a horizontal presence near the center of the board
2. It prevents my opponent from easily creating a horizontal connection through columns 2-3
3. By playing adjacent rather than on top of their piece, I avoid giving them a vertical stack advantage
4. Column 2 is close to the center, which generally offers more strategic possibilities for connecting pieces in multiple directions
5. This move doesn't set up any immediate threats or advantages for my opponent