Final answer:
The Apgar score is used to quickly assess the health of a newborn based on five easy-to-measure traits, with a score of 7 or higher considered normal and a score of 3 or lower indicating the need for immediate medical care.
Step-by-step explanation:
The question references the Apgar score, which is a test used to quickly assess the health of a newborn. The Apgar score consists of five easy-to-measure traits, and each trait is given a score of 0, 1, or 2. The scores for all five traits are added together to yield the Apgar score, with a score of 7 or higher considered normal. A score of 3 or lower is considered critically low, indicating that immediate medical care is needed.