Which of the following is a normal reflex in a newborn?

The correct choice is the one that includes grasping, sucking, and rooting as these are indeed normal reflexes observed in newborns. Each of these reflexes plays a crucial role in the infant's development and survival.

Grasping is the reflex that allows a newborn to tightly grip anything that touches the palm of their hand, which is an important mechanism for bonding with caregivers. Sucking is vital for feeding, enabling the baby to extract milk from the breast or a bottle. The rooting reflex helps the baby find the nipple for breastfeeding when the cheek is stroked, facilitating an instinctual search for food.

Conversely, the other options include behaviors that do not align with specific newborn reflexes. For instance, wiggling, smiling, and scratching do not represent established reflex actions but rather actions that develop as the infant grows older and begins to interact more intentionally with their environment. Similarly, voluntary reflexes represent actions that require conscious control, which are not typical in newborns whose responses are largely reflexive. Lastly, while crawling and catching objects are skills that develop later as infants grow and gain motor control, they are not present as automatic reflex responses in newborns. Therefore, the grasping, sucking, and rooting reflexes stand out as