Answer: Lumbar puncture
Step-by-step explanation:
Meningitis is a condition of inflammation of the membranes that surrounds the brain and spinal cord. The symptoms of this condition includes fever, neck stiffness and headache. The cerebrospinal fluid can be used to detect meningitis. The lumbar puncture is the procedure which can be used to collect the cerebrospinal fluid from site of lumbar vertebra. The lumbar is punctured using injection syringe to collect the fluid.
In the given situation, lumbar puncture is the correct procedure to diagnose meningitis as the child is showing symptoms for the same.