Question

Stewart is a chain smoker and a nicotine attic. Due to excessive cigarette smoking, he has developed lung cancer. In this scenario, which of the following chemical compounds is likely to have caused lung cancer?

1) Nicotine
2) Tar
3) Carbon monoxide
4) All of the above

Answer 1

Tobacco smoke contains chemicals like nicotine, tar, and carbon monoxide that can cause lung cancer.

Step-by-step explanation:

Tobacco smoke contains dozens of chemical substances that are known to cause cancer, including nicotine, tar, and carbon monoxide. These chemicals can bind to DNA in a smoker's cells, causing mutations that can lead to the development of lung cancer. Therefore, the correct answer is 4) All of the above.