Quiz: Overview of Sleep
Question 1 of 3  

Which of the following characterizes the stage of sleep called REM (rapid eye movement) sleep?

  • A.

    Breathing is shallow.

  • B.

    The sleeper is easily awakened.

  • C.

    The most vivid dreams occur.

  • D.

    It accounts for about 75% to 80% of total sleep time in adults.

Am I correct?