By roughly how much did the percentage of middle school students who use e-cigarettes increase between 2011 and 2017? How much did
it increase for high school students in the same period?

Primary effectit is the most accurate.

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.