d) Walt Disney
Walt Disney, an iconic figure in animation, created the first synchronized sound cartoon, “Steamboat Willie,” in 1928. This cartoon, starring Mickey Mouse, was a landmark in the history of animation for its use of synchronized sound, a technology that was still in its infancy. “Steamboat Willie” marked the birth of Mickey Mouse as a cultural icon and set the stage for the Walt Disney Company’s future success. Disney’s innovation in combining animation with sound revolutionized the entertainment industry, making him one of the most influential figures in the history of film and animation.