Federal courts may declare illegal any action violating the Constitution.

-Will this be the principle of Rule of Law

3 answers

The rule of law is certainly involved. Are there other choices?
theirs popular sovereignty,
limited government,checks and balances, federalism and finally separation of power
Rule of Law is not one of the choices? Then that's not the answer. Consult your text materials to find out what each of these concepts means: federalism, etc. Alternatively, type the word or phrase in your search engine and look it up that way: as in popular sovereignty.