Which is the most common form of dementia among older people?

• A. Cataract
• B. Cerebral palsy
• C. Alzheimer's Disease
• D. Conjunctivitis

Answer: (C)

Alzheimer's disease is the most common form of dementia among older adults. Dementia refers to a set of symptoms, including memory loss and impaired thinking, that interfere with daily life. Among the causes of dementia, Alzheimer’s accounts for the largest share of cases, making it the typical diagnosis when progressive cognitive decline is seen in the elderly. The other options are not forms of dementia: cataract and conjunctivitis are eye conditions, and cerebral palsy is a lifelong motor disability, not a progressive cognitive disorder. There are other types of dementia as well, but Alzheimer's remains the most common.