The progressive degeneration of brain tissue and the most common form of dementia is called:

A) Glioma.
B) epilepsy.
C) Alzheimer disease.
D) Guillain-Barré syndrome.

Alzheimer Disease

A progressive neurodegenerative disorder characterized by memory loss, cognitive decline, and behavioral changes due to brain cell death.

Glioma

A type of tumor that occurs in the brain and spinal cord, originating from glial cells.

Guillain-Barré Syndrome

A rare neurological disorder where the body's immune system mistakenly attacks part of its peripheral nervous system.