To achieve the maximum score of 2 points on neuromuscular reflex irritability, what must the infant do?

To achieve the maximum score of 2 points on the neuromuscular reflex irritability assessment, the infant must exhibit a strong cry. This reaction indicates a high level of responsiveness and neurological function, which is essential for evaluating the infant's neurological health and reflexes. A robust cry reflects the infant's ability to respond to stimuli, demonstrating good irritability of the nervous system.

Other responses, such as griming or exhibiting no response, would not indicate the same level of neurological engagement or irritability. A grimace might suggest a mild response but does not convey the vigor of a full cry, while no response is concerning, as it implies a lack of reflex activity. Sleeping does not constitute a responsive state and would therefore not contribute to the scoring criteria in this context. Thus, a strong cry is the clear indicator of optimal neuromuscular reflex irritability.