Final answer:
The passage reinforces the traditional social hierarchy by supporting traditional values.
Step-by-step explanation:
The passage in question reinforces the traditional social hierarchy by D) supporting traditional values. Traditional values are often associated with maintaining the existing hierarchy and upholding social norms and conventions. In the passage, it is mentioned that marriage provides a stable socioeconomic household and reduces competition among individuals. These points align with the idea of supporting traditional values and the hierarchical structure of society.