John Maynard Keynes is associated with a law summarized in shorthand as which statement?

1. Keynes' law is named for the economist John Maynard Keynes, who wrote during the Great Depression. 2. The law is shorthand for the idea that the level of total demand drives how much the economy actually produces. 3. In this view, demand is the driver and supply follows along, the reverse of Say's law. 4. Option A states Say's law instead, which is the opposing view. _Source: OpenStax Principles of Macroeconomics for AP Courses (CC BY 4.0), Ch 10 "The Aggregate Demand/Aggregate Supply Model", section 10.1 | Macroeconomic Perspectives on Demand and Supply_