This is the final round and I'm behind 1-4. Looking at the pattern, my opponent has chosen rock in 4 rounds, paper in 2 rounds, and scissors in 3 rounds. In the most recent round, they chose rock and I won with paper. There's a possibility they might expect me to choose paper again since it just won, and respond with scissors. Alternatively, they may revert to rock since it's been their most successful move. Given that rock has been their most frequent and successful choice, I'll go with scissors to try something different from my previous move, though I acknowledge this is risky if they choose rock again. However, since I need a win and have little to lose at this point, I'm willing to take this calculated risk.