Which of the Following Observations About Chronic Insomnia Is True

Multiple Choice

Which of the following observations about chronic insomnia is true?

A) Chronic insomnia affects 45 to 50 percent of adults.
B) Chronic insomnia is more frequent in women than in men.
C) Chronic insomnia is more common in younger adults than in older adults.
D) Chronic insomnia is rarely related to other mental disorders.