Looking at the previous rounds, my opponent has shown a pattern of choosing scissors on even-numbered rounds (rounds 2, 6, and 8). This suggests they might choose scissors again for round 10. Additionally, I've already secured the overall victory with 7 wins to 0, which allows me to make a safe choice. Rock has been successful for me in previous rounds (winning in rounds 2, 6, and 8), so I'll stick with this strategy for the final round.