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. Instruct the client on the use of esophageal speech: Esophageal speech is a technique used after laryngectomy and is not relevant for managing xerostomia caused by radiation therapy to the mandible. B. Suggest rinsing his mouth with an alcohol-based mouthwash: Alcohol-based mouthwashes can further dry and irritate the oral mucosa, worsening xerostomia symptoms, so this is not appropriate. C. Provide humidification of the room air: Increasing humidity helps keep the mucous membranes moist, relieving dry mouth symptoms and providing comfort for clients experiencing xerostomia after radiation therapy. D. Offer the client saltine crackers between meals: Dry, salty foods like saltine crackers can exacerbate dry mouth and discomfort, so this recommendation is not appropriate for xerostomia management.