Who was the economist whose ideas provided a theoretical justification of the New Deal?

Question

1. Henry Morgenthau

2. Harold Ickes

3. Milton Friedman

4. Arthur Laffer

5. John Maynard Keynes

Out of all of them the only economists are Jogn Maynard Keynes and Arthur Laffer.

Answer 1

Keynes is right

Friedman is an economist
Laffer came up with the "trickle down" theory of economics
Morenthau was a financier and Ickes was also expert

Answer 2

http://en.wikipedia.org/wiki/New_Deal#Keynesian_and_monetarist_interpretations

Answer 3

I was confused !! Thank you so much <3

Answer 4

#5 is the one, Keynes