On stroking the sole of a baby's feet, the fanning out and curling in of the sole is called:

Question

Accepted Answer

The correct answer to the question is Option 2: Babinski Reflex.

1. **Explanation for Option 2 (Babinski Reflex):**
   The Babinski Reflex is a normal reflex in infants that occurs when the sole of the foot is stroked. In response, the big toe moves upward or toward the top surface of the foot, and the other toes fan out. This reflex is named after the French neurologist Joseph Babinski, who first described it. It is a primitive reflex that is present at birth and typically disappears as the child grows older, usually by the age of two. The presence of the Babinski Reflex in infants is considered normal and is used by pediatricians to assess the development of the nervous system.

2. **Explanation for why other options are incorrect:**

- **Option 1 (Moro Reflex):** The Moro Reflex, also known as the startle reflex, is an involuntary response that occurs when an infant feels a sensation of falling or hears a loud sound. The baby will extend their arms and legs, spread their fingers, and then quickly bring their arms back to the body. This reflex is unrelated to the stroking of the sole of the foot and is therefore not the correct answer.

- **Option 3 (Rooting Reflex):** The Rooting Reflex is observed when a baby's cheek or mouth is touched. The infant will turn their head toward the stimulus and open their mouth, which helps them find the breast or bottle for feeding. This reflex is associated with feeding behavior and is not related to the fanning out and curling in of the toes when the sole is stroked.

- **Option 4 (Grasp Reflex):** The Grasp Reflex is seen when an object is placed in a baby's palm, causing the infant to close their fingers around it. This reflex is related to the hands and gripping, not the feet. Therefore, it is not the correct answer for the reflex involving the sole of the foot.

In conclusion, the Babinski Reflex is the correct answer because it specifically describes the response of the toes fanning out and curling in when the sole of a baby's foot is stroked. The other options describe different reflexes that do not involve this specific action.