Final answer:
The characteristic of constitutional growth delay that is not true is weight and height at birth are generally in the lower percentiles.
Step-by-step explanation:
The characteristic of constitutional growth delay that is not true is 4) weight and height at birth are generally in the lower percentiles.
Constitutional growth delay refers to a temporary delay in a child's growth during childhood. The child usually catches up to their peers in terms of height and weight by the time they reach adulthood. However, children with constitutional growth delay tend to have a normal birth weight and height, not in the lower percentiles.
This is different from stunting growth deficit, which is diagnosed when a child's height is at least two standard deviations below the median height for their age in a reference population.