Final answer:
The sucking reflex is a newborn reflex that persists even when an infant matures into a toddler. Other reflexes like the Moro and grasping reflex tend to disappear as the child develops. The Babinski reflex is normal in infants but may indicate neural issues in adults.
Step-by-step explanation:
Reflecting on the various reflexes that infants exhibit, one particular reflex which does not disappear when an infant matures into a toddler is the sucking reflex. The sucking reflex is crucial for an infant to feed and get nourishment, whether from breastfeeding or bottle feeding. Opposite to this, certain reflexes such as the Moro reflex or the grasping reflex are expected to vanish as the baby grows. These reflexes have survival benefits in infancy but become unnecessary as the child develops more complex motor skills. For instance, the Moro reflex prepares an infant to grasp their caregiver if they have a sensation of falling, ensuring they maintain close physical contact. Similarly, the Babinski reflex, essential in newborns, could indicate issues with neural development in adults.