Explain the similarities and differences of the House of Representatives and the Senate in the process of how a bill becomes a law.

House members must be twenty-five years of age and citizens for seven years. Senators are at least thirty years old and citizens for nine years. Another difference is who they represent. ... Today, Congress consists of 100 senators (two from each state) and 435 voting members of the House of Representatives.

d is the best answer for this question.