Final answer:
The following reflexes does the neonate fan its toes in response to stroking the underside of its foot is 3) Babinski
Step-by-step explanation:
This reflex is commonly tested in newborn infants to establish the presence of neuromuscular function. When the examiner brushes a stimulus along the plantar surface of the infant's foot, the toes extend and splay out in response, indicating a positive Babinski sign.
The Babinski reflex is normal for newborns, but it is a sign of reduced myelination of the spinal tract in adults. In adults, if superficial stimulation of the sole of the foot caused extension of the foot, it would be harder to maintain balance, which is why a negative Babinski sign is the expected response in testing the reflex.
So therefore the neonate fans its toes in response to stroking the underside of its foot in the Babinski reflex. It is a sign of reduced myelination of the spinal tract in adults. So the correct answer is 3) Babinski