Answer:
The correct answer is C. Representation.
Explanation:
The ideas of a bicameral or unicameral congress discussed during the Philadelphia Constitutional Convention of 1787 refer to the representation of the states and their citizens in Congress, that is, in the legislative branch of the federal government of the United States.
Thus, representation implies the number of congressmen that each state will have in the federal legislature, where the House of Representatives will be organized through a representation proportional to the population of each state, while the Senate does it equally, with a fixed number of 2 senators per state.