Final answer:
The correct answer to the description of dementia is 'd) all of the above', as it includes declining language and memory, is related to ageing, and involves the experience of confusion.
Step-by-step explanation:
The question 'Which of the following best describes Dementia?' can be accurately answered with d) all of the above. Dementia encompasses a range of symptoms that include declining language and memory, and it can indeed be understood as a result of the complex changes happening in the brain with ageing. Though not exclusive to the elderly, its prevalence increases with age. Dementia is often characterized by the experience of confusion, among other cognitive difficulties. Symptoms associated with dementia, and particularly with Alzheimer's disease—a common type of dementia—include disruptive memory loss, confusion about time or place, difficulty with planning and executing tasks, poor judgment, and personality changes. These symptoms are more severe and persistent than normal ageing processes, distinguishing dementia from typical age-related changes.