The first American political parties emerged in Congress because

A. Article I of the Constitution required the House of Representatives be organized around the development of two parties.
B. The President was a nonpartisan figure who did not want to set an agenda so political parties helped create an agenda.
C. legislative leaders found it advantageous to cultivate a stable group of supporters by forming durable alliances.
D. legislative leaders found that only by organizing stable coalitions of supporters could they reduce the conformity costs imposed by Supreme Court decisions.

Answer: C