Yanni's friends are all going to play beach volleyball at the local park on saturday morning. he has had a rough week, wants to sleep in saturday morning, and wants to invite friends to hang out at the movies later that afternoon rather than play beach volleyball. since his three best friends are playing, he caves in and agrees to wake up early and play beach volleyball. what type of motivation is yanni showing? a. extrinsic motivation b. intrinsic motivation c. memory motivaton d. no motivation