Looking at the pattern of our previous rounds, I notice the opponent has chosen paper 3 times, scissors 3 times, but rock only once. Additionally, after the opponent plays paper (as in round 7), they've previously followed with scissors twice. If they continue this pattern and play scissors, my rock would win. I also have a 2-1 lead and need to play strategically to maintain it. Rock seems to offer the best balance of offensive potential and defensive coverage against possible opponent moves at this stage.