Question

Risk for developing lung cancer for smokers varies due to all of the following except

Answer 1

I'm pretty sure the answer is D. Inconsistently collected data.

How often you smoke and what age you start certainly do play a role in your health, as well as the depth of inhalation. And if you have other things in your lifestyle that might be risky, then that will make you more likely to be unhealthy.

I hope this is helpful! :D