Final answer:
The nurse should prioritize assessing the gag reflex in a client with lung cancer. Blood-tinged sputum is a common manifestation of lung cancer.
Step-by-step explanation:
The nurse should identify that the priority assessment for a client with lung cancer is the gag reflex. The gag reflex is an important neurological response that helps protect the airway. In individuals with lung cancer, the gag reflex may be impaired due to the tumor affecting the nerves that control it. It is crucial for the nurse to assess the gag reflex to identify any potential risks of aspiration or airway obstruction.
Out of the manifestations listed, the nurse should expect the client to have blood-tinged sputum (option B). Lung cancer can cause bleeding in the respiratory tract, leading to the presence of blood in the sputum. Clear sputum (option A) and absence of cough (option C) are not typical manifestations of lung cancer. Increased appetite (option D) is also unlikely as lung cancer can sometimes cause loss of appetite and weight loss.