Question

in which way does nicotine cause addiction?
by stimulating the brains pleasure center
by increasing blood - sugar levels
by decreasing dopamine levels
by reducing depression and anxiety

Explanation:

Nicotine stimulates the brain's pleasure - center by causing the release of dopamine, which leads to addiction. Increasing blood - sugar levels is not related to nicotine addiction. Decreasing dopamine levels is the opposite of what happens with nicotine. While nicotine may have short - term effects on mood, its primary mechanism of addiction is through pleasure - center stimulation.

Answer:

by stimulating the brain's pleasure center