In the US Senate, Cloture Gives the Minority Party Some Power Over

In the U.S. Senate, cloture gives the minority party some power over government policy. This is an example of:

A) why political parties are detrimental to American democracy.
B) why the U.S. Senate is considered the "people's body."
C) how rules and procedures affect politics and political outcomes.
D) why the U.S. budget deficit has grown in recent years.
E) why the U.S. system is more democratic than the parliamentary systems in Europe.