Looking at our previous rounds, I notice the opponent has chosen scissors twice (rounds 3 and 4) and paper twice (rounds 2 and 5). They seem to be alternating between paper and scissors in recent rounds. Since they chose paper in the last round, there's a possibility they might go with scissors again, following their recent pattern. By choosing rock, I can potentially counter their scissors play. Additionally, since I'm behind in the score (1-3), I need to make strategic choices to catch up, and playing rock gives me a good chance based on the opponent's recent tendencies.