Respuesta :
The correct answer is nicotine. It is the main ingredient in a tobacco. Nicotine is an addictive substance thus overuse of the substance will lead to addiction. It acts as a stimulant and a depressant. Tobacco can be dried for smoking and can also be consumed directly.
they are correct, because i had gotten it correct on my test but they are also correct because what they have shown for proof is correct. I had to do research about this in the past, everything they say is 100% correct, and trustworthy.
Hence, the correct answer is nicotine.