Which of the following is one of the three leading causes of traumatic brain injuries in the United States?

a. playing football

The hammer, anvil, and stirrup are three tiny bones that transmit vibrations to the:

a. vestibular sacs. b. oval window. c. eardrum. d. semicircular canal.

What is the leading reason that people do not seek professional mental health services?

a. the stigma associated with mental disorders b. the cost of treatment c. the fear of being committed or having to take medication d. they don't know where to go for services