The correct answer is C. Nonintervention policies that would encourage an economic boom.
Step-by-step explanation
Warren Gamaliel Harding (1865-1923) was an American politician who served as President of the United States between March 1921 and August 1923. His presidency was characterized by the non-intervention of the federal state in economic affairs and giving greater freedom to the Private capital.
This is shown in the fragment of his speech when he says "I have said to the people we meant to have less of government in business as well as more business in Government". According to the above, it can be inferred that the correct answer is C.