Final answer:
In the psychomotor domain of learning for a diabetic patient, activities should include observing and correcting the patient's technique for drawing up insulin to ensure they can effectively self-administer medication.
Step-by-step explanation:
When planning an educational program for a client with diabetes mellitus and focusing on the psychomotor domain of learning, the case manager should include activities that involve the physical movement and coordination related to the treatment and management of diabetes. An example of such an activity is observing the client's technique for drawing up insulin. This allows the educator to assess and correct technique in real-time, ensuring that the client can safely and effectively administer their medication. Additional activities could include practicing blood glucose monitoring, preparing balanced meals, and demonstrating exercise routines that help manage diabetes.