In cases where the etiology of a neurodevelopmental disorder is known, the most common cause is:
A)Chromosomal changes or exposure to toxins during the prenatal period
B)Heredity
C)Pregnancy and perinatal problems
D)Medical conditions during infancy and childhood

Question

Quizplus · Accepted Answer

Chromosomal changes or exposure to toxins during the prenatal period is the most common cause.
Approximately 30% of people with neurodevelopmental disorders with known etiology have chromosomal changes such as Down syndrome or exposure to toxins during the prenatal period such as fetal alcohol spectrum disorder.

In Cases Where the Etiology of a Neurodevelopmental Disorder Is