Explanation:

- The study of "Yankee City" is a famous sociological study conducted by Warner.

- Option 1: Weber - Max Weber was a German sociologist known for his work on the theory of social and economic organization, not Yankee City.

- Option 2: Warner - W. Lloyd Warner was an American anthropologist and sociologist who conducted the Yankee City study, focused on social stratification and class in a New England town.

- Option 3: Veblen - Thorstein Veblen was an economist and sociologist known for his theory of the leisure class.

- Option 4: Giddens - Anthony Giddens is known for structuration theory and modern sociology but not for Yankee City.