Answer:
The correct answer is the option E: focuses on spending, or aggregate demand, as the fundamental factor in the economy.
Step-by-step explanation:
To begin with, in the economics field the Keynesian theory was developed by John Keynes after the Great Depression in 1929 due to the fact that by then the economics area was conducted by neoliberal economists and it lead to the situation in which they found themself then so Keynes proposed the intervention of the government as more important for the economy and focusing primarily in the spending of this one with the purpose of creating more jobs and therefore the people will increase the demand because they would have money now.