The correct answer is D) form an exploratory committee.
A potential candidate most likely forms an exploratory committee.
Before participating in a primary, the politician who is aspiring to run for the presidency, first of all, has to form an exploratory committee. This way he/she could asses the real chances he/she has and the probable support of the members of his party. In a bi-partisan system like the one in the United States has, the two more dominant parties have been the Republican Party and the Democratic party.
