These stocks trade at reasonable valuations ahead of key growth catalysts.The stock market has sold off over the last month, but some companies are showing improving business fundamentals that could support substantial share price gains over the next year. Here are two promising comeback stocks to buy before 2025.1. CarnivalCarnival (CCL 2.48%) is the leading cruise ship operator, and it continues to see significant improvement in profits that could support share price gains over the next year. The stock tr ...