The most important driver for the global economy is likely to be:

If you are willing to pay no more than $4 for a slice of pizza and the price of a slice of pizza is $4, then

A) if you buy it, you would be cheated because you would realize no total benefit from the purchase. B) you buy it but you get no marginal benefit from the purchase. C) you will not buy it. D) you buy it but you get no consumer surplus from the purchase. E) you might buy it depending on how the slice's marginal benefit compares to its price.

What are the defining features of Keynesian macroeconomics and what policies do Keynesian macroeconomists recommend?

What will be an ideal response?