What are the components of an Adonis cocktail?

The Adonis cocktail is traditionally made with sherry and sweet vermouth, along with a dash of bitters, which is what makes option C the correct answer. The balance between these ingredients creates a refreshing and aromatic drink. Sherry adds a distinct nutty and complex flavor, while sweet vermouth contributes sweetness and herbal notes, which are enhanced by the bitters. This combination creates a well-rounded cocktail that is both flavorful and nuanced.

The other options present different spirits and mixers that do not align with the classic recipe of the Adonis. Gin and whiskey, while they may be used in various classic cocktails, are not components of an Adonis. Tequila and lime juice suggest a different type of cocktail altogether, likely resembling a margarita or other tequila-based beverage, which further confirms that only the combination of sherry, vermouth, and bitters constitutes the authentic Adonis cocktail.