question: Babies do what most during their rapid growth period?
choices.text: birth move run fight puberty play learn shaking
choices.label: A B C D E F G H
fact2: During infancy, babies learn whether to trust the world.
combinedfact: Babies learn most during their rapid growth period.
formatted_question: Babies do what most during their rapid growth period? (A) birth (B) move (C) run (D) fight (E) puberty (F) play (G) learn (H) shaking