The highly addictive chemical ingredient in tobacco is nicotine, a stimulant. Which of the following characteristics is not associated with the use of nicotine?
lowers blood pressure
narrows blood vessels
creates an aroused, alert mental state
increases heart and respiratory rates

LOWERS BLOOD PRESSURE.

Explanation: Nicotine an alkaloid (C10H14N2) organic compound, commonly occurring in the tobacco plant. In small doses it is a habit-forming stimulant; in larger doses it is toxic and is often used in insecticides. The effects of nicotine in tobacco are; raises your blood pressure and heart rate; narrows your arteries and hardens their walls; and makes your blood more likely to clot; creates an aroused, alert mental state.

abuse, both physical and emotional. messes with your head. makes you feel like nothing, no matter what anyone else tells you

i would definitly say b : )