A nurse in a long-term care facility is collecting data from an older adult client who has a respiratory infection. Which of the following findings indicates that the client is developing delirium?

A. Pinpoint pupils are associated with opioid use, not delirium. B. Decreased blood pressure is not a primary indicator of delirium. C. Pale, dry skin is not a defining feature of delirium. D. Disorganized thinking is a hallmark sign of delirium, reflecting acute cognitive disturbance and confusion.