What is the main spirit used in a Daiquiri?

The main spirit used in a Daiquiri is rum. This classic cocktail originated in Cuba and is traditionally made with white rum, fresh lime juice, and sugar. The use of rum is essential because it not only provides the base flavor profile for the drink but also highlights the Caribbean origins of the cocktail. Rum complements the citrus and sweet elements, creating a balanced and refreshing drink. This is why the correct answer is rum, as it forms the backbone of the Daiquiri and has a significant role in the cocktail's overall character and tradition.