Final answer:
The nursing assistant should be instructed to report the oral temperature of 101.2 F (38.4C), as it can indicate a worsening of the patient's COPD and their increased risk of developing complications from respiratory infections.
Step-by-step explanation:
The nursing assistant should be instructed to report the oral temperature of 101.2 F (38.4C). This is because a fever is one of the common symptoms of pneumonia, and in a patient with COPD, it can indicate a worsening of their condition. Additionally, the fact that the patient has not received their annual flu shot and pneumonia vaccination further increases their risk of developing complications from these respiratory infections.