Why did the united states introduce the marshall plan in the postwar era?

The Marshall Plan is also known as ERP(European Recovery Plan). it was introduced by the united states for rebuilding the economies of European countries after world war one. The motive behind the Marshall Plan was to stop the spread of Communism in Europe. The Plan got its name from the secretary of state George Marshall. It lasted for four years during which aid of more than $12 billion along with technical help was offered to European Nations. The plan was successful as it managed to bring the economic production above the pre-war levels.

- "bill clinton ( the 42nd u.s. president, served in office from by low unemployment, declining crime rates and a budget surplus. during clinton's second term, the u.s. economy was healthy, unemployment was low and the nation experienced a major technology boom and the rise of the internet."

question:  

the chart compares religious beliefs to us political party support.

religious beliefs and party support, 2012

this chart demonstrates that

a) more highly religious people supported the republican candidate, while more nonreligious people supported the democratic candidate.

b) more highly religious people supported the democratic candidate, while more nonreligious people supported the republican candidate.

c) more moderately religious people supported the republican candidate, while more nonreligious people supported the democratic candidate.

d) more moderately religious people supported the democratic candidate, while more nonreligious people supported the republican candidate.

answer: a.