Explanation:

- Power, Authority, and Legitimacy are key concepts in sociology and political sociology.

- Max Weber:

- Known for his work on these concepts.

- Defined authority types: traditional, charismatic, and legal-rational.

- His ideas are central in understanding how power is legitimized.

- Correct Answer: Option 3 - Weber

- Karl Marx:

- Focused on class struggle and economic power.

- Did not specifically emphasize authority or legitimacy in his theories.

- Émile Durkheim:

- Concentrated on social solidarity and collective conscience.

- Less focus on power dynamics.

- Talcott Parsons:

- Developed theory around social systems and functions.

- Discussed power but not in the same context as Weber.