What items can be chosen as a side with omelets?

The chosen answer is correct because it includes a variety of traditional sides that complement omelets well. Hashbrowns, homefries, grits, and bread are commonly served alongside omelets in many diner settings, making them suitable choices for enhancing the meal.

Hashbrowns and homefries add a hearty, comforting element to the dish, while grits provide a creamy texture and a bit of southern flair, which may appeal to a wide range of customers. Bread can come in various forms, such as toast, allowing for different preferences and dietary needs.

The other options include sides that, while they may be appealing on their own, do not align as closely with the typical diner experience for serving with omelets. For instance, salad and pancakes are not traditionally served with omelets, and yogurt, rice, and oatmeal also fall outside the usual accompaniments associated with a breakfast dish like an omelet. Thus, option C stands out as the most fitting selection.