The new governmental structure, which consisted of a bicameral legislature (Congress), and executive elected by the legislature, and a separate national judiciary; state representation in Congress would be proportional, based on state population; the people would elect members to the lower house, and members of the lower house would elect the members of the upper house

A bicameral legislature has legislators in two separate assemblies, chambers, or houses. Bicameralism is distinguished from unicameralism, in which all members deliberate and vote as a single group, and from some legislatures that have three or more separate assemblies, chambers, or houses.  fewer than half the world's national legislatures are bicameral. Often, the members of the two chambers are elected or selected by different methods, which vary from country to country.

Explanation: Yes, the explanation is correct, the people would elect members to the lower house, and members of the lower house would elect the members of the upper house

"social stratification refers to the way people are ranked and ordered in society. in western societies, stratification is primarily seen and understood as a result of socioeconomic status, which produces a hierarchy in which access to resources, and possession of them, increases from the lower to the upper strata"