A nurse is visiting a client who has Alzheimer's disease in their home. The client's spouse states that the client gets increasingly agitated and restless in the evening hours and can sometimes be difficult to calm down. Which of the following behaviors does the nurse recognize that the client is experiencing?

Choice A reason: Relocation stress syndrome occurs when a client experiences anxiety or confusion after moving to a new environment. It is not specific to evening agitation. Choice B reason: Depression may cause withdrawal or sadness but does not typically present with evening agitation and restlessness. Choice C reason: Sundowning is a phenomenon in Alzheimer's disease where clients become more confused, agitated, or restless during the late afternoon and evening. It is a common behavioral symptom. Choice D reason: Wandering is a behavior seen in dementia but is not limited to evening hours and does not fully explain the timing and agitation described.