Answer :
Children typically achieve the milestone of throwing a ball overhand by B. 18 months of age, indicating significant development in their motor skills and coordination.
Throwing a ball overhand is a developmental milestone, indicating that a child's motor skills are progressing. This specific milestone is typically achieved by 50-90% of children by 18 months of age (Option B). The ability for a child to throw overhand involves coordination and muscle development, which are expected to reach this level of maturity around this time. We can also refer to other motor skills development, such as being able to kick a ball without losing balance and to run with better coordination, which further suggests that by 18 months, children are significantly developing their gross motor skills.
