Answer:
safety aids help us to be safe from any kind of disaster and accidents. But when we get in an accident first aid help us to save our life before the arrival of the doctor
I believe it's about 23.4 percent so in this case (B. 25) but I'm Not 100% Sure!
My Apologies if incorrect! =( =)
The answer is (C) Melatonin
The answer to this question is A