Final answer:
Hors d'oeuvres are usually served before the main meal at cocktail parties or formal events. They can be hot or cold and include a variety of bite-sized foods such as bruschetta or mini quiches.
Step-by-step explanation:
Hors d'oeuvres are usually served before the main meal and are commonly found at cocktail parties or formal events. They are served on trays or platters and passed around by servers or placed on a table for guests to help themselves. Hors d'oeuvres can be hot or cold and can include a variety of bite-sized foods such as bruschetta, mini quiches, shrimp cocktail, or cheese and charcuterie platters.