In recent years, the percentage of cases in which the cause of intellectual disabilities is known has dramatically increased due to
A)better assessment practices by teachers.
B)the mapping of the human genetic code.
C)better assessment practices by medical doctors.
D)advances in microscopic technology.

Question

Quizplus · Accepted Answer

The mapping of the human genetic code has provided more information about the causes of intellectual disabilities, as many cases have been linked to genetic mutations or abnormalities. This has led to a significant increase in the percentage of cases where the cause is known. While better assessment practices by teachers and medical doctors may also contribute to this increase, the advancements in microscopic technology have had a lesser impact in this area.

In Recent Years, the Percentage of Cases in Which the Cause