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: Unknown
Lumbar puncture is done at which spinal level - 
Select and explain. 
A. L1L2, B. 12L1, C. L3L4, D. L5S1
C: L3L4
Answer: C: L3L4 
Explanation: Ans. is 'c' i.e., L3L4 o Lumbar puncture is performed most frequently at the L3 L4 interspace or the L4 L5 interspaceo This is done to ensure that the puncture will be below the bottom of spinal cord but above the bottom of subarachnoid space.