The Law of Manu is most closely connected to the codification of what aspect in Indian society?

• A. Astronomy
• B. Caste system
• C. Marriage rituals
• D. Trade regulations

Answer: (B)

This item asks how an ancient Indian text shaped social structure by codifying duties and roles. The Law of Manu, or Manusmriti, is a traditional legal–moral code that lays out the specific duties, rights, and behaviors for people in different social groups, especially the four varnas. Its systematic detailing of how each group should live, interact, marry, and maintain ritual purity gave formal justification and guidance for the hierarchical order known as the caste system. Because its central purpose is to organize society around caste distinctions and corresponding duties, it is best understood as a codification of the caste system.

Astronomy, marriage rituals, and trade regulations are governed by other texts or traditions that focus on those domains, whereas Manu’s priority is defining social order through caste-based obligations. That’s why this choice best matches the question.