Almost all psychologists believe our emotions are inextricably linked to our thoughts

Which of the following is a true statement about the effectiveness of medications used to treat erectile dysfunction?

A. Viagra lasts longer than Cialis or Levitra, at up to 36 hours. B. Cialis increases sexual satisfaction. C. Viagra works by making nitric oxide more available. D. None of the erectile dysfunction medications should be used when taking cholesterol-lowering medicines.

A hypothesis is most like a(n)

a. brilliant insight. b. experiment. c. theory. d. hunch.