According to researchers in the dynamic systems framework, learning to reach for a toy involves __________.

A. the same set of movements, developing in the same order across babies
B. different "styles" of movement across babies that eventually end up in a similar reaching movement
C. continuous reinforcement by parents of the correct hand movements by rewarding the baby with the toy for a successful reach
D. maturation of fine motor skills that are largely genetically programmed

Answer: B