Looking at our previous rounds, I notice several ties where my opponent matched my move. In the last round, we both played scissors, creating a tie. There's a possibility my opponent might expect me to follow scissors with paper (as I did in rounds 5-6), so they might choose scissors again to counter. Alternatively, they might try to beat my potential scissors play by choosing rock. By choosing rock myself, I can either win against scissors or tie against rock, which seems like the most strategic option for this round.