I would say the answer would be B.
Hope this helps!!
The answer is : Tar
Tar is some sort of residual substance that we commonly found in tobacco products, which could cause the symptoms you've mentioned above
not only that, Tar is a highly carcinogenic substance, which mean that it generate high risk of cancer it get into our system
Your answer is D. "Measuring the angle at which a gymnast’s body bends during an aerial flip"
Woman's health, men's health, fitness magazines etc