A nurse is caring for a client who reports xerostomia following radiation therapy to the mandible. Which of the following is an appropriate action by the nurse?

A. Offer the client saltine crackers between meals: Dry foods like saltine crackers can worsen the discomfort associated with xerostomia and may irritate oral mucosa. They are not recommended for managing dry mouth. B. Instruct the client on the use of esophageal speech: Esophageal speech is a technique used after laryngectomy, not for managing xerostomia. It does not address the underlying issue of dry mouth caused by radiation therapy. C. Provide humidification of the room air: Humidifying the room adds moisture to the environment, helping relieve dryness in the oral cavity and throat. This intervention is appropriate for managing xerostomia and improving comfort for clients post-radiation therapy. D. Suggest rinsing his mouth with an alcohol-based mouthwash: Alcohol-based mouthwashes can further dry and irritate the oral mucosa, worsening xerostomia. Clients should be advised to use non-alcoholic, moisturizing rinses instead.