Which group of economists contends that excessive taxes and stringent regulations diminish the motivation to work, save, and invest, thereby harming the economy?

Explanation

Supply-side economists argue that high taxation and heavy regulation reduce incentives for individuals and businesses to work, save, and invest, which they believe is the main issue affecting economic growth. Other groups, such as neo-Keynesian, rational expectations, and new classical economists, focus on different factors influencing the economy.