Diem Is Pregnant with Identical Twins

Multiple Choice

Diem is pregnant with identical twins. She also suffers from schizophrenia. When her sons Wes and Cam are 19 years old, Wes is diagnosed with schizophrenia, but Cam is not. The twins are also different in personality: Wes is very impulsive, indulgent, and not very good at planning, while Cam is more reserved. When they have a conversation, Wes usually does all the talking and Cam the listening.
-What is one possible reason for Wes' impulsive and indulgent personality at age 19

A) His neurons are not fully myelinated yet.
B) His frontal lobe has not fully developed yet.
C) His cerebrum has not fully developed yet.
D) He is experiencing major synaptic pruning.