This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Moro's reflex persisting for more than 6 months indicates damage to which of following lobes? 
Select and explain. 
A. Occipital, B. Frontal, C. Parietal, D. Temporal
B: Frontal
Answer: B: Frontal 
Explanation: The Moro reflex is an infantile reflex that develops between 28–32 weeks of gestation and disappears between 2-3 months of age. It is a response to a sudden loss of support and involves three distinct components: spreading out the arms (abduction) pulling the arms in (adduction) and startle.
*Asymmetrical moro's reflex: still present at 6 months
 Causes: 

Fracture of clavicles
Fracture of humerus
Erb's palsy