Adisorder common in late adulthood that is characterized by losses in memory and cognition and changes in personality and that is believed to be caused by deterioration of the brain's structure and function is

Dementia.

Explanation:

Dementia is what we often call the variety of sypmtoms that come with the systematic deterioration of the cognitive capacities, it is common in late adulthood, and it causes people to loose memory and cognitive capabilities, among the symptoms emotionall distress and depression can also be found.

answer; i believe the answer is (b) fascism;