What Does Research on the Achievement of Motor Milestones in Infants

Multiple Choice

What does research on the achievement of motor milestones in infants suggest?

A) Motor development is primarily biological and reflects innately programmed changes consistent across cultures.
B) Motor development is dependent on physical maturation,which is guided by biological changes.
C) Motor development is largely an environmental process that is occasionally limited by physiological constraints.
D) Motor development is heavily influenced by parenting styles and culture.