A nurse is caring for a client who was hospitalized with a high blood alcohol content level. The provider fears the client may go into withdrawal and require medical supervision. The client's manifestations included anxiety, tremors, BP 166/100 mm Hg, and tachypnea about 1 hr ago. Now the client begins yelling out that they are seeing spiders crawling all over the walls. They believe they are at home and begin calling for their mother. The nurse should recognize that the client is experiencing which of the following stages of alcohol withdrawal?