Step 1: Identifying the marriage pattern.
The diagram represents cross-cousin marriage, where marriage occurs between the children of a brother and a sister, rather than parallel cousins.
Step 2: Type of exchange involved.
Cross-cousin marriage is associated with generalised exchange, where women circulate in a unidirectional manner across kin groups over generations.
Step 3: Social implications of this marriage system.
Option (C): Generalised exchange establishes enduring asymmetrical relations between bride-givers and bride-takers.
Option (D): This pattern aligns with the ideal of kanyadana, where the bride-giver holds ritual superiority over the bride-taker.
Step 4: Elimination of incorrect option.
Option (A): Parallel cousin marriage corresponds to restricted exchange, which is not depicted in the diagram.
Step 5: Conclusion.
Therefore, options (B), (C), and (D) correctly apply to the diagram.