A 72 year old man fell while shopping and hurt his knee. His vitals are fine. He speaks in a low voice and is very slow to give answers. What is the most probable diagnosis?

The key is A. Alzheimers. [Alzheimer's disease, is a chronic neurodegenerative disease that usually

starts slowly and gradually worsens over time. It is the cause of 60–70% of cases of dementia. The most

common early symptom is difficulty in remembering recent events. As the disease advances, symptoms

can include problems with language, disorientation (including easily getting lost), mood swings, loss of

motivation, not managing self-care, and behavioural issues. As a person's condition declines, they often

withdraw from family and society. Gradually, bodily functions are lost, ultimately leading to death].