A client diagnosed with neurocognitive disorder due to Alzheimer's disease has a decline in ADL, is disoriented to place and time, displays increasing frustration and social withdrawal. The nurse recognizes these symptoms as indicative of which stage of the illness?

A. Moderate stage: During the moderate stage of Alzheimer’s disease, clients typically experience noticeable decline in activities of daily living, disorientation to time and place, and increased social withdrawal. Frustration and behavioral changes become more prominent as cognitive deficits interfere with independence. B. Severe stage: The severe stage is characterized by profound cognitive impairment, loss of communication, and total dependence for ADLs. Disorientation and frustration are present earlier, and clients may be nonverbal or bedridden in this stage. C. Mild stage: In the mild stage, cognitive deficits are subtle, with mild memory loss and minor difficulties in complex tasks. Clients are generally able to maintain independence and social engagement, with minimal disorientation. D. Confabulation stage: Confabulation is a coping mechanism sometimes seen in mild to moderate Alzheimer’s disease, where clients fill memory gaps with fabricated stories. It is not a distinct stage but rather a symptom that may appear intermittently.