Answer:
d. meet federal specifications as licensed or certified ambulances
Explanation:
The six-pointed Star of Life emblem is used to identify vehicles that are licensed or certified as ambulances and therefore meet federal specifications.The Star of Life is also a universal symbol that stands for emergency medical care. These signs are also used on maps and highway signs to indicate where one can find emergency medical care. Its name could be traced to a figure from Greek mythology, Asclepius, the god of medicine and healing.