The United House of Representatives is one of the two houses of the United States Congress. It comprises of 435members.
The United States Congress is bicameral with the Senate being the upper house and the Representative House being the lowest in hierarchy.
The number of representatives in the House are determined based on population. One representative is appointed over every thirty thousand people. There are 50 states on which each representative is appointed.
So, the correct answer is that it is determined on the basis of population.
