what is the most significant physical development of middle childhood, in terms of setting the stage for the development of new skills and the pursuit of new activities? group of answer choices boys overtake girls in height, weight, and motor skills. children experience an increased incidence of illnesses and a decreased risk of accidents. there is improvement in fine motor coordination that makes it possible to write, play a musical instrument, paint, and draw. there is development of gross motor skills that make possible activities such as running, kicking with alternating feet, balancing, and throwing.