My opponent has shown a pattern of consistently countering my moves. In the last two rounds, I chose rock and they chose paper. They might expect me to avoid rock now and play scissors, which they could counter with rock. By playing paper, I can potentially break this cycle and counter their anticipated rock play. Additionally, my opponent has played paper most frequently (twice), suggesting they might have some preference for it, making scissors another viable option - but they may expect this adjustment from me.