A. He had poor teachers.
B. The difficulty is related to a genetic mutation.
C. His mother drank excessive alcohol while pregnant.
D. He is mistreated at home.
answer: B. The difficulty is related to a genetic mutation.
A. He had poor teachers.
B. The difficulty is related to a genetic mutation.
C. His mother drank excessive alcohol while pregnant.
D. He is mistreated at home.
answer: B. The difficulty is related to a genetic mutation.