Explanation:

- Option 1: Automation

Automation refers to the use of technology to perform tasks without human intervention. Wirth did not primarily analyze the effects of automation in his major works.

- Option 2: Industrialism

Industrialism is about the social and economic changes brought by the rise of industry. While it's related, Wirth's analysis focused more specifically elsewhere.

- Option 3: Post-industrialism

Post-industrialism deals with a society moving beyond an industrial economy to one based on services. Wirth's writings came before this concept became prominent.

- Option 4: Urbanism

Correct Answer: Louis Wirth is best known for analyzing the effects of urbanism. He studied how city life impacts behavior, relationships, and society in his famous essay "Urbanism as a Way of Life."