Final answer:
The condition caused by the JC virus that leads to demyelination of the cerebrum is called Progressive Multifocal Leukoencephalopathy (PML).
Step-by-step explanation:
The condition caused by the JC virus that leads to demyelination of the cerebrum is called Progressive Multifocal Leukoencephalopathy (PML).
PML is a rare and serious brain infection that targets the white matter of the brain, specifically the myelin sheath that surrounds nerve fibers. The JC virus infects oligodendrocytes, which are cells responsible for producing and maintaining myelin in the central nervous system. The destruction of myelin in the cerebrum can lead to various neurological symptoms, such as weakness, coordination problems, and cognitive impairments.