When Amy's Infant Daughter Starts to Crawl, She Primarily Uses

Multiple Choice

When Amy's infant daughter starts to crawl, she primarily uses her arms to help herself. After she masters this new way of moving around the room, she starts relying on her legs to help herself more in the crawling process. From a developmental standpoint, the way Amy's daughter starts with her arms and then adds the use of her legs follows the ____________ principle.

A) proximodistal
B) cephalocaudal
C) neonatal reflex
D) encephomotor