Why is it that the brain of an adolescent becomes capable of ...

[aabwk4]

Why is it that the brain of an adolescent becomes capable of processing information more efficiently than the brain of a child?
 
  a. Because the brain has grown to its adult size by the time puberty occurs
 b. Because synaptic pruning and myelination are nearly complete by adolescence
 c. Because not all of the cerebral lobes were active before puberty, but they are all working in adolescence
  d. Because the corpus callosum atrophies and disappears during adolescence

Question 2

After taking many different types of classes in college, Sarah has finally decided to become a mechanical engineer. She is actively planning for graduate school and a job in her chosen field. According to Marcia, which identity does Sarah exhibit?
 
  a. Moratorium
  b. Foreclosure
  c. Diffusion
  d. Achievement

[SamMuagrove]

Answer to Question 1

b

Answer to Question 2

d