Ache Babies Spend Much of Their First 3 Years of Life

Ache babies spend much of their first 3 years of life in close proximity to their mothers, often being held. Which of the following BEST describes how their gross motor development compares to that of U.S. infants?

A) Ache infants are slower to walk by about 2-3 months than U.S. infants.
B) Ache infants are slower to walk by nearly a full year than U.S. infants.
C) Ache infants have the same patterns of gross motor development as U.S. infants.
D) Ache infants demonstrate delays in motor development throughout childhood compared to U.S. infants.