During which stage of sleep does a person's brain waves resemble the brain waves of a person who is fully awake?

In paradoxical sleep, brain activity, heart rate, and blood pressure closely resemble waking consciousness, but the sleeper ______

a. is able to move about freely b. appears to be deeply asleep and is incapable of moving c. can often speak in answer to questions d. will act out suggestions put to him/her

Which of the following statements best reflects what has been learned about sexual dysfunction from population surveys?

A) For both sexes, sexual dysfunctions decrease with age. B) Sexual dysfunctions are rare among young people but begin to appear in middle age. C) Only a minority of the population ever experiences a sexual dysfunction. D) Despite being fairly common, sexual dysfunctions usually do not lead people to seek help for their problems.