Who did Harry save in the lake in the triwizard tournament?

In the Triwizard Tournament's second task, Harry Potter saved his fellow competitor Cedric Diggory as well as Ron Weasley and Fleur Delacour's sister, Gabrielle, who were captured by merpeople in the lake. Despite being in a race against time, Harry chose to ensure all three were rescued, demonstrating his bravery and sense of honor. Ultimately, he and Cedric emerged together with the hostages, showcasing Harry's commitment to helping others.