Looking at the previous rounds, I notice my opponent has shown a pattern. The opponent chose rock in round 1 and 3, and scissors in round 4. There's a tendency for the opponent to play rock after a winning move (they won with scissors in round 4, so might be confident in playing rock next). Additionally, the opponent hasn't chosen paper yet, making rock a safer bet against a potential scissors play. Given I've lost the last two rounds, I need to break this losing streak, and rock seems the most strategic option based on the observed pattern.