Which of the following is a common symptom of Alzheimer's Disease?

Impaired communication is a hallmark symptom of Alzheimer’s Disease. As the disease progresses, individuals often experience difficulties in expressing themselves or understanding others. This can manifest in various ways, such as struggling to find the right words, repeating themselves, or having trouble following conversations.

In contrast, severe physical tremors are more characteristic of movement disorders such as Parkinson's disease rather than Alzheimer's. The symptom of having a memory of past events may seem positive, but in Alzheimer's, there is typically a decline in the ability to recall recent memories, which is one of the earliest signs. Lastly, visual clarity is not directly affected in Alzheimer’s Disease, as the primary cognitive decline does not usually interfere with visual acuity; rather, it affects the processing of visual information and orientation.