Giving up smoking is particularly difficult mainly because
- A. tobacco is inexpensive
- B. cigarettes contain essential vitamins
- C. withdrawal produces no symptoms
- D. nicotine produces strong physical and psychological dependence
Explanation
Nicotine reaches the brain within seconds and alters reward pathways, so stopping brings cravings and withdrawal. Dependence, not price, is why most smokers need repeated attempts to quit.
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