The US Republican Party mostly includes members who are moderate, conservative, or liberal. moderate, conservative, or Libertarian. moderate, progressive, or liberal. moderate, progressive, or Libertarian.

B. moderate, conservative, or Libertarian.

Explanation:

The US Republican Party is one of the two major parties in the United States. People who support the party tend to be located on the right side of the ideological spectrum. The party includes moderate people (just like the Democratic Party) and conservative people. Conservatism is often identified as an ideology that promotes traditional values and institutions. Finally, the party includes some libertarians as well. Libertarianism is an ideology that upholds liberty as the most important principle.