Which of the following dishes is not primarily featured at IHOP?

The correct answer is that sushi is not primarily featured at IHOP. IHOP is well-known for its breakfast offerings, particularly pancakes, omelettes, and French toast, which are central to its menu and part of its identity as a breakfast-focused restaurant. Pancakes have been a signature dish since the restaurant's inception, while omelettes and French toast also play a significant role in attracting breakfast and brunch customers. Sushi, on the other hand, is not a traditional breakfast item and does not align with the brand's focus on classic breakfast foods. Therefore, it stands out as the option that is least representative of IHOP's menu offerings.