Which of these conditions is the most common form of dementia?

A) amyotrophic lateral sclerosis (ALS)
B) Parkinson's disease
C) Alzheimer's disease
D) Reye's syndrome

Alzheimer's Disease

A progressive neurologic disorder that causes the brain to shrink and brain cells to die, resulting in severe memory loss and other cognitive impairments.

Reye's Syndrome

A rare but serious condition that causes swelling in the liver and brain, often occurring in children recovering from a viral infection who have been given aspirin.