Most Infants Can Control Their Upper Body Before They Can

Multiple Choice

Most infants can control their upper body before they can control their arms because _____.

A) gross motor skills follow a cephalocaudal direction
B) gross motor skills follow a proximodistal direction
C) infants are more motivated by behaviors involving the upper body
D) control of the upper body is a gross motor skill, and control of the arms is a fine motor skill