Betty has tried to stop using a particular drug permanently, but her attempts have been unsuccessful. When she stops using, she experiences irritability and difficulty concentrating. Even though she has emphysema, a serious physical disorder, she continues to use it. Surprisingly, it is a legal drug. To which drug is Betty probably addicted?

a. caffeine
b. alcohol
c. marijuana
d. nicotine

d. nicotine

Explanation:

Nicotine is the chemical in tobacco that makes tobacco addictive. Nicotine results in long-term brain changes creating addiction. Nicotine enters directly into blood stream and stimulates adrenal glands to release adrenaline (epinephrine) causing an increase in :

After entering the blood, it quickl enters the brainand triggers a cascade of biochemical reactions that are interpreted by the brain as rewarding.It is a legal drug too

Hence in the given scenario, Betty is probably addicted to Nicotine.

nothing

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