Answer:
reflexes
Step-by-step explanation:
Newborn infants have natural reflexes, which consist of involuntary movements that are a reaction to the environment.
Sneezing, coughing and blinking are reflexes that last until adulthood, which means infant does not stop preforming them at a certain age like with sucking, grasping or tonic neck reflex.
Coughing and sneezing are a reaction to the airway or nasal stimulation or irritation while blinking occurs when presented with bright light, touch, or sudden move.