Final answer:
For clients with hypertension, the nurse should include lifestyle modifications in the presentation, such as engaging in regular exercise and quitting smoking to effectively manage high blood pressure.
Step-by-step explanation:
A nurse planning a presentation for clients with hypertension should emphasize lifestyle modifications that are known to help manage high blood pressure. These include regular exercise, which helps to improve heart health and reduce blood pressure, and smoking cessation, as smoking is a major risk factor for the development of cardiovascular diseases, including hypertension. A low-sodium diet is also beneficial since high sodium levels can lead to increased blood pressure. Therefore, the correct answer for the nurse to include in the presentation is regular exercise (c) and smoking cessation (d).