Final answer:
The favored areas for strengthening and weakening systems in an economy are the Keynesian zone and the neoclassical zone.
Step-by-step explanation:
The zones that are favored areas for strengthening and weakening systems are referred to as the Keynesian zone and the neoclassical zone. Hard-line Keynesian economists believe that economies are mostly in the Keynesian zone, while hard-line neoclassical economists argue that economies are mostly in the neoclassical zone. These zones help in understanding the economic issues, tradeoffs, and policy choices in an economy, similar to a doctor diagnosing a patient's symptoms. The Keynesian Perspective and The Neoclassical Perspective provide insights into the underpinnings and consequences of these viewpoints.