Final answer:
The nurse should teach a client with COPD to have 5 or 6 small meals a day, eat a high-calorie diet, and it is not necessary to avoid meals cooked in the microwave.
Step-by-step explanation:
The nurse should teach a client with COPD to have 5 or 6 small meals a day (option b) instead of three large meals. This can help prevent bloating and feelings of fullness, which can make breathing more difficult for individuals with COPD. Additionally, the nurse should emphasize the importance of eating a high-calorie diet (option d) to help maintain energy levels, as COPD can cause weight loss and muscle wasting. Lastly, it is not necessary to avoid meals cooked in the microwave (option c) as this method of cooking does not worsen COPD symptoms.