When someone says I need to use my gray matter, they are referring to the _____.
A) cerebellum
B) brainstem
C) cerebral cortex
D) meninges
Question 2
Without oxygen, brain damage will occur within _____.
A) 2 to 3 minutes
B) 4 to 8 minutes
C) 10 to 15 minutes
D) 25 to 30 minutes