Question

Which of the following substances found in tobacco smoke stimulates the brain? A. acetone B. toluene C. nicotine D. ammonia

Answer 1

Hi there!

The answer is C. nicotine.
Tobacco is the carrier of nicotine. This stimulates the brain but also makes you dependent, which can eventually cause (life-long) addiction.

Answer 2

C. Nicotine. This substance found in tobacco and tobacco smoke stimulates the brain