Which statement indicates that an adolescent understands mouth care instructions during chemotherapy?

The statement indicating that an adolescent understands mouth care instructions during chemotherapy is that they can utilize foam-tipped applicators to wipe their teeth and gums. This option reflects an understanding of the gentle care required for oral hygiene during chemotherapy, a time when the oral mucosa can be sensitive and more prone to irritation and lesions due to the effect of chemotherapy on rapidly dividing cells.

Using foam-tipped applicators is a practical recommendation, especially for individuals undergoing treatment who might experience mouth sores or a decrease in the ability to brush their teeth traditionally. This option recognizes the importance of maintaining oral hygiene while also adapting to the physical challenges presented by the treatment.

The other statements do not convey an understanding of safe and effective mouth care during chemotherapy. Avoiding brushing altogether could exacerbate oral health issues, suggesting a lack of awareness of the importance of oral hygiene. Rinsing with alcohol-based mouthwash can irritate the mucosa further, which is not advisable during treatment. Lastly, performing mouth care only once a day does not meet the recommended frequency for maintaining oral hygiene, especially in a compromised state. Therefore, the correct statement emphasizes both the understanding and adaptation of mouth care during a critical time.