Which of the following is NOT considered a primitive reflex?

The walking reflex is not considered a primitive reflex because it typically develops later in an infant's growth and is not present at birth. Primitive reflexes are automatic responses typically seen in newborns that serve essential survival functions and often disappear as the child grows and the nervous system matures. Examples of primitive reflexes include the grasp reflex, which allows a baby to grasp objects placed in their hand, the Babinski reflex where the toes fan out when the sole of the foot is stroked, and the swallowing reflex, which helps infants efficiently feed. In contrast, the walking reflex appears when infants are held upright with their feet touching a surface, leading to stepping movements, and usually develops between 2 to 4 months of age, making it a more advanced motor response rather than a primitive reflex.