Arianna's management professor just told her class that the final exam is optional for students like her who currently have an A. She decides to take the exam anyway, since she likes the subject and wants to master the material. Here, Arianna is motivated to take the exam by a(n)
A. intrinsic reward.
B. physiological need.
C. high need for power.
D. extrinsic reward.
E. hygiene factor.
Answer: A. intrinsic reward.