Final answer:
Émile Durkheim's theoretical works primarily focus on the theme of social solidarity.
Step-by-step explanation:
Durkheim believed that society was greater than the sum of its parts and emphasized the interconnectivity of all elements.
He argued that studying collective behavior was different from studying individual actions, and he explored the concept of social solidarity as a sense of community within a society.Émile Durkheim's theoretical works primarily focus on the theme of social solidarity.