The answer is B. Underline.
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You can assume that Louis weighs more than Trevor, since his extra height gives him more body mass.
Answer:
Additional Protections for Children Involved as Subjects in Research
Explanation:
1st: Point at someone and tell them to call 911
2nd: Point at a worker near you and if there isn't one point to a person and tell them to go see if anyone near has a defibrillator
3rd: Start CPR with 30 chest compressions before giving two rescue breaths