In which situation would you call 9-1-1 or the designated emergency number? a teenager who has sunburned arms and is in pain an older person who has a small superficial burn on the leg a small child whose palm is burned by hot water a healthy adult who has a burn on the arm from a cigarette?
You would call 911 in the situation where a small child's palm is burned by hot water.
The other situations seem mild; a teenager with sunburned arms and is in pain is normal when staying out in the sun for too long, an older person with a small superficial burn on the leg is a mild case of burn, and a healthy adult with a burn on the arm from a cigarette is fine (he is healthy and the burn is not extreme).