Final answer:
A nurse should administer a high-protein formula to a client with chronic bronchitis because it helps in the repair and maintenance of lung tissue and supports breathing muscles.
Step-by-step explanation:
The student is asking about the most suitable type of enteral formula a nurse should administer to a client with chronic bronchitis. The correct answer is c) High-protein formula. This is because patients with chronic respiratory conditions like bronchitis may require more protein to help repair and maintain lung tissue and to support their breathing muscles. Therefore, healthcare providers often anticipate administering a high-protein formula in such cases.