Which term BEST describes the American political party system?

Two party best describes the American political party system. for most of the history of the U.S, two major political parties have competed for office. Though third parties do exist, they have yet to gain the same level of power as the two major parties

I’m not exactly sure but i would say letter C. A governments main purpose is to help establish rules and control so order is maintained. without a government, everything would turn into chaos.