How many chemicals in tobacco products have been proven to cause cancer?
a)30
b)60
c)1000
d)4000

The correct answer is letter D. There are about 4,000 different types of chemicals found in tobacco products. Scientists have discovered that 43 of which are cancer-causing and can negatively affect the body in many other ways. Nicotine is the known addictive chemical in tobacco that causes a person's dependence.

Make a decision because you before you make a decision you have to know what it’s about and do reasearch

This needs more info