Insomnia is A. interruptions in breathing patterns during sleep.
B. a lack of sleep.
C. an inability to sleep, even if tired.
D. the pattern of sleepiness and wakefulness.

C. an inability to sleep, even if tired.

Explanation:

Insomnia is a sleeping disorder also known as sleeplessness in which people have trouble sleeping. They may have difficulty falling asleep, or staying asleep as long as desired.

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1. cold turkey (no outside ). about 90% of people who try to quit smoking do it without outside support -- no aids, therapy, or medicine. although most people try to quit this way, it's not the most successful method. only about 5% to 7% are able to quit on their own.

2. behavioral therapy. this involves working with a counselor to find ways not to smoke. together, you'll find your triggers (such as emotions or situations that make you want to smoke) and make a plan to get through the cravings.

3. nicotine replacement therapy. there are several types, including nicotine gum, patches, inhalers, sprays, and lozenges. they work by giving you nicotine without the use of tobacco. you may be more likely to quit with nicotine replacement therapy, but it works best when you use it with behavioral therapy and lots of support from friends and family. and remember that the goal is to end your addiction to nicotine, not simply to quit using tobacco.

explanation:

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