The correct option for the statement in Spanish 'es lo que primero se ofrece en el menú' is 'aperitivo'. The word 'aperitivo' in English means appetizer.
An appetizer is a small dish containing food or a small drink served before a meal in order to stimulate appetite.
In consequence, an appetizer can bea light snack taken before the main meal.
Some examples of well-known appetizers include, among others, Chicken Enchilada Dip, Cowboy Caviar, Scallion, Caramelized Onion Dip, etc.
