'Eat Fresh' is Subway's famous advertising slogan emphasizing their positioning as a healthier fast-food alternative with fresh ingredients, made-to-order sandwiches, and vegetables. The slogan differentiates Subway from competitors like KFC (fried chicken), McDonald's (burgers/fries), Dominos (pizza), and Pizza Hut (pizza). Subway has used this slogan globally since the early 2000s to highlight their fresh, customizable approach. Option D is correct.