__________ is the agent that creates physiological dependence on tobacco products.

A) Nembutal
B) Nicotine
C) Mescaline
D) Morphine

Physiological Dependence

A condition arising from chronic use of a substance where the body becomes reliant on it for normal functioning, leading to physical withdrawal symptoms when the substance is not taken.

Nicotine

A potent stimulant and the addictive component found in tobacco products, affecting the nervous system.

Nembutal

A barbiturate drug used primarily as a sedative or for short-term treatment of insomnia.