A therapist helps Samantha overcome her fear of water by getting her to swim in the family's backyard pool three times a day for two consecutive weeks. The therapist's approach to helping Samantha best illustrates:

Which of the following situations best demonstrates the principle of separation of powers in the u.s. government? a. the president can veto laws passed by the legislature. b. the courts must approve constitutional amendments. c. states create their own educational policies. d. members of the legislature are elected by voters.