The answer should be B. States.
The Vice president in my opinion is almost a second president. The vice president's main use in this century is to replace the president in a dire emergency. This is why we almost never see the VP and President together. The president is only one man and it is almost impossible for him to do everything that is needed in the time that he is alloted in office. This is why the VP has many other duties, to help and support his partner.
