John Is Blind and Is Therefore Unable to Detect the Light

John is blind and is therefore unable to detect the light that normally sets the suprachiasmatic nucleus (SCN) . If he is like most blind people:

A) his sleep-wake, body temperature, and melatonin circadian rhythms can become desynchronized.
B) he will suffer from attacks of cataplexy, especially when he is emotionally aroused.
C) stage he w 4 NRill useEM sign sle laepn wguhageen slee andp ttalkiend tno ―slg typieecpall signy ‖ during happens.
D) his REM sleep will consist of very vivid visual dreams most of which will be lucid dreams.