Marcus is 83 takes a long time to think about and say what he is thinking. Simple thoughts take a lot of effort, and he needs help with his finances. He developed this condition very suddenly and has experienced a steady cognitive decline since it began. Marcus was diagnosed with mild neurocognitive disorder. What aspect of his case is unusual?a It is unusual for mild neurocognitive disorder to show a steady cognitive decline. b It is unusual for mild neurocognitive disorder to occur in someone over 80.c It is unusual for mild neurocognitive disorder to have a sudden onset. d It is unusual for mild neurocognitive disorder to involve speech aphasia.

d. Unusual for mild neurocognitive disorder to involve speech aphasia

Explanation:

Most persons as they age because of changes in brain chemistry and physiology become slower in thinking and controlling attention. The biological explanation for this is because the fatty insulation layer surrounding the nerves become worn out. The electrical impulses going to and from the brain is not sufficiently conducted and some of the messages is lost or delayed.  

This is a normal part of aging, dementia however, is not. This could involve a sudden onset of memory loss that progressively worsens over time along with increasing speech aphasia. This worsens over time and the person eventually losses all cognition.

explanation:

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