Final answer:
The best intervention for an individual with slightly elevated blood sugar would be to follow up with their primary care doctor for further evaluation, likely followed by lifestyle modifications and retesting blood sugar in the following months.
Step-by-step explanation:
An individual who has a slightly elevated blood sugar detected at a community-sponsored health screening should consider an appropriate intervention to address this concern. Given the serious nature of hyperglycemia and diabetes as a health issue, it is not advisable to prescribe medication immediately without a thorough evaluation. Moreover, disregarding the result outright is not prudent as it may overlook an underlying condition. Therefore, the most suitable option among those provided would be to recommend that the individual follows up with his/her primary care doctor for a further evaluation. This would enable a more accurate diagnosis and a personalized management plan, potentially including lifestyle modifications such as moderate weight loss, regular physical activity, and a healthful diet which can effectively reduce blood glucose levels. Additionally, retesting blood sugar in a few months after initiating any recommended lifestyle changes would provide valuable information regarding the individual's response to the intervention.