What is the right number of levels when categorizing theories by their level of analysis?

Which group believes that the United States must be prepared to act militarily to protect its interests and that military power is most effective when others view it as legitimate?

a. liberals b. neoconservatives c. isolationists d. conservatives

Marbury v. Madison was a landmark Supreme Court case which

a. upheld judicial review of congressional acts b. expanded federal power via the Constitution's "necessary and proper" clause c. concurred that the 1965 Civil Rights Act authorized federal oversight of state election procedures d. confirmed the Electoral College method of electing presidents