(A) Recession
(B) Depression
(C) ** Inflation
(D) Undemployment
EXPLANATIONS BELOW
Concept note-1: -The Office of Price Administration (OPA) was established within the Office for Emergency Management of the United States government by Executive Order 8875 on August 28, 1941. The functions of the OPA were originally to control money (price controls) and rents after the outbreak of World War II.
Concept note-2: -The Office of Price Administration (OPA) was the specific government agency charged with combatting inflation resulting from shortages.
Concept note-3: -The D-Day operation of June 6, 1944, brought together the land, air, and sea forces of the allied armies in what became known as the largest invasion force in human history. The operation, given the codename OVERLORD, delivered five naval assault divisions to the beaches of Normandy, France.