Use the Following to Answer Questions

Multiple Choice

Use the following to answer questions:
There are numerous types of abnormal development of the human brain. For each term listed, select the appropriate alternative from the list below.
-heterotopia ___

A) aborted cell migration of gray matter
B) absence of cerebral hemispheres, diencephalon, and midbrain
C) failure to form sulci and gyri
D) single undifferentiated hemisphere