In an experiment, the independent variable . A. Always influences the dependent variable B. Is the same for all groups in an experiment C. Is influenced by the dependent variable D. Is manipulated or varied by researchers Please select the best answer from the choices provided A B C D.

D. Is manipulated or varied by researchers

american political culture includes a plenty of focus views and preferences. not all westerns experience the same opinions, of course, but the large preponderance promises to these general ideas, including equality, justice, freedom, individualism, integrity, and difference.

the united states is a democratic republic. residents elect representatives to governmental, nation, and local administration; those deputies create the regulations that command u.s. community. although emptiness in u.s. law needs it, in usage, the administrative system is ruled by executive factions.