A client with laryngitis related to influenza is experiencing difficulty speaking and persistent cough. What nursing advice should be given?

A. Administer antitussives to suppress coughing completely: Coughing is a protective reflex needed to clear secretions from the respiratory tract. Completely suppressing it can lead to mucus accumulation and secondary pneumonia. In viral infections, the cough should only be managed if it is non-productive and prevents sleep or causes exhaustion. B. Prescribe antibiotics to prevent progression of the infection: Laryngitis caused by influenza is viral in origin, making antibiotics biologically ineffective. Prescribing them "just in case" is against evidence-based practice and leads to the development of resistant bacterial strains. Antibiotics provide no relief for the inflammation or viral load associated with influenza. C. Encourage voice rest and hydration to promote recovery: Resting the vocal cords reduces mechanical irritation and allows the laryngeal mucosa to heal. Hydration keeps the mucosal linings moist and helps thin any secretions, making them easier to clear. This is the standard, evidence-based supportive care for viral laryngitis. D. Advise frequent use of decongestants to reduce throat inflammation: Decongestants target the nasal passages by causing vasoconstriction and have no direct effect on the inflammation of the larynx. They can also have a drying effect on the throat, which may worsen the irritation and cough. They are not an appropriate treatment for the primary symptoms of laryngitis.