Final answer:
Normal positioning in newborns is indicated by flexed arms and legs, a positive response to touch, and appropriate reflexes such as a normal Babinski sign which involves foot dorsiflexion and toe extension.
Step-by-step explanation:
Key indicators of normal positioning in newborns include a baby exhibiting flexed arms and legs that resist extension, a well-developed sense of touch that responds positively to soft stimuli, and the presence of neuromuscular function as observed through reflexes such as the plantar reflex. In particular, a normal Babinski sign in newborns would present with the foot dorsiflexing and the toes extending and splaying out. While normal newborn positioning can vary slightly from baby to baby, generally a baby that has made the transition from the womb well will show indicators such as a strong heart rate, reflexes to stimulation like crying, and muscle tone indicating flexion and extension resistance.