Explanation:

- Émile Durkheim, a founding figure in sociology, proposed that societies transition from mechanical to organic solidarity as they become more complex.

- Anomie: A state of normlessness that can obstruct the establishment of organic solidarity as it leads to breakdowns in social norms and cohesion.

- Inequality of opportunities: Hinders organic solidarity by creating divisions and preventing integration based on mutual dependence.

- Inadequacy of opportunities: While related to social issues, Durkheim primarily focused on anomie and inequality as obstaclesto organic solidarity.

- Option 1 (1 and 2): Focuses on anomie and inadequacy, but inadequacy is less emphasized by Durkheim.

- Option 2 (1 and 3): Correctly identifies anomie and inequality as factors aligned with Durkheim’s view.

- Option 3 (2 and 3): Includes inequality but not anomie.

- Option 4 (1, 2, and 3): Includes all factors, but inadequacy is less relevant according to Durkheim.