Explain how the phrase "correlation does not imply causation" is relevant to studying the results of correlational studies as compared to experimental studies?

Pretty sure this would be b. the rest are trick questions. the bystanders  won't go near you if u have cpr cuffs that could hurt them. the dog will back off because the sound will scare him. and the vomits just a stupid trick. if there is that much slober and vomit on the guy hes either choking on it, or just take off his shirt. 

Addiction is a chronic brain disease that causes a person to compulsively seek out drugs, despite the harm they cause.

Ithink the answer is d. hope this : )