The following question, consist of two words each that have a certain relationship to each other, followed by four lettered pairs of words. Select the lettered pair that has the same relationship as the original pair of words: Meat : Vegetarian :: Liquor : ?

The answer is C. Teetotaller.

Meat is a food that is typically eaten by people who are not vegetarians. Vegetarians do not eat meat. Liquor is a type of alcoholic drink. Teetotallers do not drink alcohol.

Insane, introvert, and foolish are not related to meat and liquor in the same way that vegetarian and teetotaller are.