Which finding indicates that a full-term newborn is experiencing pain following a circumcision?

A furrowed brow is a common indicator of pain in newborns. This facial expression suggests discomfort or distress, which can occur after surgical procedures such as circumcision. Newborns may not have the ability to verbally express pain; thus, observing changes in their facial expressions is essential. A furrowed brow specifically indicates that the infant may be experiencing discomfort, making it a relevant finding in the context of post-procedural pain assessment.

In the other options, awakening every three hours can be a normal sleep cycle for a newborn and does not specifically indicate pain. An oxygen saturation level of 95% falls within an acceptable range for a newborn, indicating that the infant is likely stable and not in acute distress. The positive Babinski reflex is a normal neurological response in infants and does not correlate with pain; it reflects healthy neurological function instead.