Arrange These Infant Motor Skills from Earliest to Latest in the Universal

Multiple Choice

Arrange these infant motor skills from earliest to latest in the universal developmental sequence:

A) rolls over :: crawls :: stands alone :: walks up steps.
B) stands alone :: walks up steps :: crawls :: rolls over.
C) crawls :: rolls over :: walks up steps :: stands alone.
D) rolls over :: stands alone :: crawls :: walks up steps.