Which of the following student behaviors best fits the IDEA definition of emotional disturbance?
a. Page usually gets excellent grades but since starting fourth grade has been getting C's and D's.
b. Courtney tells the school nurse that she has been crying every day for a week because her parents are divorced.
c. Maggie responds to teasing one day by throwing a chair through a window.
d. Grace has been depressed and withdrawn for 7 months.