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.

answer; ( action training environment;

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.