Question

which reflex is normal in infants but indicates cns damage in adults?
patellar reflex
withdrawal reflex
babinski reflex
crossed extensor reflex
reciprocal inhibition

Explanation:

The Babinski reflex is normal in infants as their nervous system is still developing. In adults, a positive Babinski reflex (toes fanning out and big toe dorsiflexing when the sole is stroked) indicates damage to the central nervous system (CNS) such as a lesion in the corticospinal tract. The patellar reflex is a normal deep - tendon reflex in both infants and adults. The withdrawal reflex is a protective reflex present in both infants and adults to remove a body part from a harmful stimulus. The crossed extensor reflex is a normal reflex that occurs in response to a strong stimulus (e.g., during a withdrawal reflex on one side, the opposite side extends). Reciprocal inhibition is a normal phenomenon in muscle control (e.g., when one muscle group contracts, the antagonist muscle group relaxes).

Answer:

C. babinski reflex