To determine who propounded the concept of 'collective representation' in sociology, let's explore this concept and the contributions of each of the options provided.

Collective Representation: This concept is primarily associated with the French sociologist Emile Durkheim. In sociology, collective representations are the symbols, concepts, and ideas that arise from the collective consciousness of a society and are shared among its members. These representations shape the values, norms, and beliefs of the society.

Let's examine why the other options are incorrect:

• Max Weber: He is known for his work on bureaucracy, the theory of social action, and the Protestant Ethic. He focused on the individual and rationalization processes in society, not on collective representations.
• Auguste Comte: Known as the father of sociology, Comte introduced positivism and divided sociology into social statics and dynamics. However, he did not develop the concept of collective representation.
• Karl Marx: He is best known for his theories on class struggle and the critique of political economy. Marx's focus was more on economic structures and class relations rather than collective representations.

Conclusion: Emile Durkheim developed the concept of 'collective representation,' which aligns with his broader work on social facts and collective consciousness in society. Therefore, the correct answer is Emile Durkheim.