<prompt> Which of the following is most characteristic of sleep in a 45-year-old woman with major depressive disorder?Sleeping too many hours at nightFalling asleep suddenly during the daytimeWalking up too early in the morningHaving difficulty coming fully awake after sleep  <response>: Although excessive sleeping may also occur, the sleep problem most characteristic of the major depressive disorder is early morning awakening, commonly called terminal insomnia. Falling asleep suddenly during the daytime is narcolepsy, and cessation of breathing during sleep is sleep apnea. Sleep drunkenness involves difficulty in coming fully awake after sleep. 