Donny failed his math course in his first semester at college. He started seeing a tutor once per week, enrolled in the math course again, and he failed the course again. Then he started going to the tutor twice a week, took the math course a third time and still failed. Donny feels like whatever he does, he will never understand math. Donny is discouraged because he is experiencing
a.post-traumatic stress disorder
b.learned helplessness
c.resilience
d.None of these are correct