For the final round, I'm choosing scissors based on a few strategic considerations. My opponent has shown a tendency to play rock when I've previously chosen scissors (rounds 2 and 6), but they might expect me to avoid scissors due to those past losses. After I just won with rock in round 9, there's a good chance my opponent will play paper expecting me to stick with rock. By choosing scissors, I can potentially counter this paper play. While this is somewhat risky if they choose rock again, the pattern suggests they may be more likely to play paper in this final round as an adjustment to my recent win.