Final answer:
One early manifestation of Alzheimer's disease is forgetting the location of common objects. Other early manifestations include disruptive memory loss, confusion, difficulty with tasks, poor judgment, and personality changes.
Step-by-step explanation:
One early manifestation of Alzheimer's disease is forgetting the location of common objects. This can be seen when a person regularly misplaces items or frequently forgets where they put something. It is important to note that forgetfulness can also be a normal part of aging, but if it is severe and persistent, it may be a sign of Alzheimer's disease. Other early manifestations of Alzheimer's disease include disruptive memory loss, confusion about time or place, difficulty planning or executing tasks, poor judgment, and personality changes.