During which stage of sleep are we most likely to dream?

Ali, a war veteran, has had nightmares, flashbacks, and anxiety attacks for the past three years. Ali is most likely suffering from __________

a) acute stress disorder. b) external locus of control. c) catastrophic stress. d) post-traumatic stress disorder (PTSD).

Toni has a blood disorder that gets its name from the shape of the red blood cells. She would be diagnosed with what disorder?

a) sickle-cell anemia b) hemophilia c) Klinefelter's syndrome d) fragile X syndrome