Your Young Daughter Seems to Be 1 Month Late in Reaching

Your young daughter seems to be 1 month late in reaching the milestone of walking independently.Friends ask you if you're worried that her motor development overall is stifled.With what you know about infant motor development, you would respond that there is a:

A) range for age-appropriate motor skills, and one skill is not necessarily linked to others
B) range for age-appropriate motor skills, but that all the skills are linked to others
C) cutoff for age-appropriate motor skills, and you're very concerned she's passed it
D) cutoff for age-appropriate motor skills, but you're not very concerned she's passed it