Doris works in a stressful job, has difficulty falling asleep, and sometimes wakes up earlier than she wants to in the morning. She agrees to participate in a sleep study to determine whether she has insomnia. It is likely that the results of her sleep study will show that Doris:
A. spends less time sleeping compared to people who do not complain of insomnia.
B. is lacking the chemicals that promote and maintain sleep.
C. spends as much time sleeping as people who do not complain of insomnia.
D. has an excess of arousal-producing neurochemicals.
Answer: A
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