Question

Cardiovascular disease in smokers is primarily due to the ______ in cigarette smoke.

a. nicotine
b. tar
c. carbon monoxide
d. both a and c

Answer 1

Hello There!

I'd probably put 'B and C' but that isn't an option so i'll just go with C.

Hope This Helps You!
Good Luck :)

- Hannah ❤

Answer 2

The answer is D. Both nicotine (which is addictive) and carbon monoxide can damage your heart and lungs. Tar, on the other hand, can lead to mouth or gum disease, not necessarily cardiovascular disease.