When assessing a newborn's transition to extrauterine life, the Apgar score is used to evaluate which of the following categories? Heart rate, respiratory rate, reflexes, skin color, and weight Square window, arm recoil, popliteal angle, scarf sign, heel to ear, and lanugo Heart rate, respiratory rate, muscle tone, reflex irritability, and skin color Heart rate, skin color, reflex irritability, respiratory rate, and lanugo