## **Core Concept**
The question assesses knowledge of neonatal reflexes present at birth. Neonatal reflexes are critical for a newborn's survival and development, and their presence or absence can indicate neurological integrity or potential issues.

## **Why the Correct Answer is Right**
The Moro reflex, also known as the startle reflex, is one of the primitive reflexes present at birth. It is characterized by a response to a sudden loss of support or a loud noise, causing the infant to spread their arms, then bring them in as if embracing. This reflex typically disappears by 4-6 months of age. Since the Moro reflex is indeed present at birth, options related to its absence or presence need to be evaluated against the other reflexes listed.

## **Why Each Wrong Option is Incorrect**
- **Option A:** The rooting reflex is present at birth and helps the newborn find the nipple for feeding. It involves turning the head towards a stimulus on the cheek or lips, which is essential for feeding. Therefore, stating it is not present at birth is incorrect.
- **Option B:** The sucking reflex is also present at birth and is crucial for feeding. It involves the rhythmic movement of the jaw and tongue when the roof of the mouth is stimulated. Saying it is not present at birth is incorrect.
- **Option D:** The grasping reflex, or palmar grasp reflex, is present at birth. When a finger is placed in the newborn's palm, they will curl their fingers around it. This reflex typically fades by 4-6 months. Claiming it is not present at birth is incorrect.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that the asymmetrical tonic neck reflex (ATNR), also known as the "fencing" posture, is typically present at birth but usually disappears by 6-7 months. However, among the provided options and based on common reflexes tested, recall that the **Moro reflex** is indeed one of the reflexes present at birth, similar to the rooting, sucking, and grasping reflexes.

## **Correct Answer:** .