**Core Concept**
The APGAR score is a quick assessment of a newborn's overall health, focusing on five components: Appearance, Pulse, Grimace, Activity, and Respiration. Each component is scored from 0 to 2, with 2 being the best, and the total score ranges from 0 to 10.

**Why the Correct Answer is Right**
In this scenario, the baby has a heart rate of 110, which is above the normal range for a newborn. The good muscle tone and active movements indicate adequate circulation and oxygenation. The baby's good respiratory effort and rate also suggest proper breathing. The pink body color but blue extremities are indicative of peripheral vasoconstriction, a common response to cold stress. The APGAR score is calculated based on these parameters.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because the baby has a good heart rate and muscle tone, indicating adequate circulation.
**Option B:** Incorrect because the baby's heart rate is above 100, which is not a sign of distress.
**Option C:** Incorrect because the baby has a good respiratory effort and rate, and the extremities are blue due to peripheral vasoconstriction, not due to a lack of respiratory effort.

**Clinical Pearl / High-Yield Fact**
The APGAR score is a quick and useful tool for assessing newborns, but it is not a definitive measure of a baby's health. A low APGAR score does not necessarily indicate a serious problem, and a high score does not guarantee a healthy baby.

**Correct Answer:** 8.