Step 1: Understanding the Concept:
Social stratification is the process by which individuals and groups in a society are ranked in a more or less enduring hierarchy of status.
Step 2: Detailed Explanation:
Social stratification is characterized by its vertical nature.
1. Hierarchical: It involves the arrangement of social groups in a ladder-like structure where some occupy superior positions and others occupy inferior positions.
2. Generational: Stratification is usually social rather than biological, but it is passed down through generations.
3. Pattern of Belief: Most systems of stratification are supported by cultural beliefs or ideologies that justify why the inequality exists (e.g., the Varna system or the American Dream).
4. Thus, options (B), (C), and (D) are incorrect because they contradict the fundamental nature of social stratification.
Step 3: Final Answer:
The primary characteristic of social stratification is that it is hierarchical.