The nurse is caring for a client with chemotherapy-induced mucositis who is describing soreness of the tongue and oral tissues. Which is the best initial nursing action?

Choice A reason: A soft diet may reduce mechanical irritation but does not address the underlying inflammation or infection. It is supportive but not the initial priority. Choice B reason: Frequent mouth care is the most effective initial intervention. It helps reduce microbial load, soothe inflamed tissues, and prevent progression of mucositis. Choice C reason: Topical analgesics may relieve pain but do not prevent worsening of mucositis or promote healing. Choice D reason: Swabs can be abrasive and may worsen mucosal injury, especially in severe mucositis. Gentle cleansing with non-irritating solutions is preferred.