Wich best describes the primary function of the senate

The primary function of the senate was considered by the Founding Fathers as the popularly elected House of Representatives' check. Therefore, every state, regardless of the population or size, shall be equally represented. The Senate will share with the responsibility of the House of Representatives for all the lawmaking within U.S.

The role of the Senate was conceived by the Founding Fathers as a check on the popularly elected House of Representatives. Thus, each state, regardless of size or population, is equally represented. ... The Senate shares with the House of Representatives responsibility for all lawmaking within the United States.