Twelve Months Is the Average Age at Which a Child

Multiple Choice

Twelve months is the average age at which a child starts to walk, but your child does not start to walk until 14 months of age. This is a clear indication that development is _________ but not ___________.

A) Age-related; age-dependent.
B) An estimate; for certain
C) A guess; very accurate
D) An approximation; very specific
E) Rate specific; sequence specific