In a national poll, approximately ________ of American adults admitted to having fallen asleep behind the wheel of a vehicle at least once in the past year.
A) one-half
B) one-third
C) one-fourth
D) None of the answers is correct.
Question 2
Some researchers suggest the link between short sleep and impaired learning is brain-related, specifically because of problems with the
A) hypothalamus.
B) pons
C) prefrontal cortex.
D) pituitary gland.
