The answer should be: D. AED training
Automated electronic defibrillator use is easy, but in actual medical practice, there is only a few pattern of heart rhythm that was shockable. AED can be available in many places but trained personnel might not present when it was needed.
When AED used by someone without training, the helper can be protected by Good Samaritan Law. But their help might worsen the patient condition.
A strain is an injury to a muscle in which the muscle fibers tear as a result of overstretching.
It can be both good and bad. Extreme dieting can make you sick, and you end up being underweight. Minor dieting could be good for you if you're overweight.
