The correct option is D Membranes of the spinal cord
Meninges is the covering of the brain. It has three membranous layers known as dura matter, pia matter and arachnoid matter. Meningitis is an acute inflammation of the protective membranes covering the brain and spinal cord, known collectively as the meninges. It is caused by an infection with microorganisms such as viruses, bacteria and sometimes fungi. Viruses that cause meningitis include enteroviruses, herpes simplex virus, varicella zoster virus, mumps virus etc. Thus, the correct answer is option D.