Question

In approximately ________ of the cases of intellectual disabilities, there is an identifiable cause related to biological or environmental factors; the most common of these is ________.

Answer 1

One-third; fetal alcohol syndrome

Step-by-step explanation:

Fetal alcohol syndrome (FAS) is a condition that occurs in baby when a mother drinks alcohol excessively during pregnancy. This can lead to a large range of problems, such as short height, low weight, small head size, poor coordination, low intelligence and abnormal appearance. This is the most common cause of intellectual disabilities with an identificable biological or environmental cause.