Final answer:
The person at the highest risk for developing hypertension during B/P screening at a health fair is the one with risk factors like obesity, poor nutrition, and lack of physical activity, among others.
Step-by-step explanation:
When performing blood pressure (B/P) screening at a health fair, the nurse would identify the person with a combination of risk factors such as obesity, poor nutrition, lack of physical activity, tobacco use, and potentially a family history of hypertension as having the highest risk for developing hypertension. Chronically elevated blood pressure, or hypertension, is often asymptomatic but poses serious health risks such as heart attacks, strokes, aneurysms, peripheral arterial disease, chronic kidney disease, and heart failure. Because hypertension can be a 'silent killer,' regular monitoring of blood pressure is crucial for early detection and management, involving lifestyle changes and possibly medication.