I have a question and I would really appreciate if you answered me as soon as you can: Laissez faire economics was advocated by
a. Both Keynes and the classicals.
b. Neither Keynes nor the classicals.
c. The classicals, but not Keynes.
d. Keynes, but not the classicals.
—Mende, July 24, 2000
Please see these infoplease.com articles on the doctrine of laissez-faire (see specifically the 2nd paragraph of the section "Formulations of the Doctrine"), Keynesian economics, and John Maynard Keynes for more information.
(See specifically the section on "Departure from Classical Economics"