Final answer:
The nurse should initially ask Mr. Lackraj if he has consulted his physician about an exercise plan to ensure his safety given his symptoms of obesity and shortness of breath.
Step-by-step explanation:
The practical nurse's initial assessment question for Mr. Lackraj should be "Have you consulted your physician about an exercise plan?" Considering Mr. Lackraj's current presentation as an obese, flushed individual experiencing shortness of breath, it's critical to ensure that any exercise he undertakes is safe and appropriately tailored to his health status. Before embarking on a new exercise regime, a thorough evaluation by a medical professional is essential, particularly for clients with potential risk factors such as obesity, which could predispose them to cardiovascular complications and other obesity-related health problems. Therefore, confirming that Mr. Lackraj has consulted with a healthcare professional and has an exercise plan approved by them is a prudent step.