A client with flail chest is receiving mechanical ventilation. Which of the following interventions is the priority to ensure adequate ventilation and prevent aspiration?

Maintain proper cuff inflation pressure on the endotracheal tube to ensure airway patency.

Position the client in a supine position to facilitate breathing.

Administer high-flow nasal oxygen to increase oxygenation.

Increase the tidal volume on the ventilator to enhance lung expansion.