The answer is D.
I took the test and this was the answer for me.
Sorry if i'm wrong.
Calvin Coolidge, the 30th president of United States, meant that the government should be business friendly, in context to his famous quote where he said "the chief of business of the American people is business".
According to him, the Americans were very concerned about the economy and their personal prosperity and was inclined to praise the major business leaders and the business community, giving them the credit for the economic prosperity of the country.
But if we read on the complete quote, we can conclude that he did not only emphasize on business or wealth accumulation alone rather talked about peace and honor as the core values of America.
