Looking at the previous rounds, I notice my opponent has played rock 3 times, scissors 3 times, but paper only once. In the last round, I won with rock, so the opponent might expect me to stick with it and counter with paper. Additionally, the opponent has shown a tendency to play rock after playing scissors (as seen in rounds 3 and 7). Since they just played scissors in round 8, there's a reasonable chance they'll play rock again. However, given the opponent's limited paper usage and the fact that they might try to counter my previous rock play, scissors seems like the strategic choice that could give me an advantage.