Which item is considered an appetizer on the menu?

An appetizer is typically a small dish served before the main course, designed to stimulate the appetite. In this context, the item that fits this definition is Chips n' Dip App, as it clearly signifies that it is intended to be enjoyed before the main meal. Appetizers are usually lighter fare meant to be shared or enjoyed in smaller portions, making this the appropriate choice for what is classified as an appetizer on the menu.

The other options listed signify main dishes or entrees. Chicken Fettuccine, Seafood Stuffed Potato, and Gulf Shrimp Entree are all substantial enough to be considered main courses, rather than starters. These items are generally meant to fulfill the main component of a meal, which distinguishes them from appetizers like Chips n' Dip App.