Janelle is discussing the milestones of fine and gross motor development during the preschool period. Which information is accurate? Select all that apply. Riding a tricycle is accomplished by age 3. Climbing and jumping are well established by age 3. Throwing a ball overhand without losing balance by age 4. Skipping and hopping on one foot, as well as catching a ball, by age 4. Walking up and down stairs using both feet on each step by age 4.