A nurse in a newborn nursery is organizing a plan of care for four newborns after receiving a change-of-shift report. Which of the following assessments should the nurse perform first?

A. A jittery newborn at 4 hours old may be experiencing hypoglycemia, which is a potentially serious condition requiring immediate assessment and intervention. B. Universal newborn screening is important but can be delayed until the newborn is more stable. C. The New Ballard Score is an assessment of gestational age and can be done after stabilization. D. Checking temperature prior to the first bath is important but less urgent than evaluating possible hypoglycemia.