Who did Mario have to rescue in "Super Mario Bros. 3"?

In "Super Mario Bros. 3," Mario had to rescue Princess Peach, who was the captive of Bowser, the main antagonist of the game. This installment features Mario and Luigi embarking on a quest across various worlds, each filled with enemies and obstacles, to save the princess. Princess Peach's rescue is a central theme throughout many games in the Mario franchise, reinforcing her role as a damsel in distress and motivating the main character's adventures. While Bowser is indeed the one responsible for her capture, Mario's primary objective remains to save Princess Peach, making her the correct choice in this scenario.