The correct answer would be lead paint. Even though there has been a decline in the amount of lead based paint that is used nowadays, still the largest source of lead poisoning in children in America comes from dust and chips from deteriorating lead paint on the inside walls of their homes and schools.
Do not wear a helmet when riding a bike.
C, smooth and soft so it can cushion the stresses of running
For them not having stress they need to be calm it’s quiet.