What popular American sandwich consists of a grilled ground beef patty served in a sliced bun, often with lettuce, tomato, and cheese?

• A Hot dog
• B Meatball sub
• C Hamburger ✓
• D Cheesesteak

The hamburger became a quintessential food in the early 20th century, popularised by White Castle in the 1920s and later by chains like McDonald's worldwide.