Final answer:
A neonate must exhibit 'No response' to receive a 0 on reflex (neuromuscular) irritability, which could indicate a potential health issue requiring medical attention.
Step-by-step explanation:
To receive a 0 on reflex (neuromuscular) irritability, the neonate must exhibit C) No response. In the context of newborn reflexes, reflex irritability is assessed during a newborn's early life to evaluate their neuromuscular development and overall health. Reflecting on the various newborn reflexes such as the Moro reflex, which includes a sudden spreading out of the arms and often crying, or the sucking reflex, which enables a baby to feed, a score of 0 would indicate that the baby does not respond to reflex testing, suggesting a potential problem that may need medical attention. Newborn reflexes are checked shortly after birth and are an integral part of the Apgar scoring system, which also looks at skin color, heart rate, muscle tone, and respiration to determine the neonate's condition post-delivery.