On whose writings are the economic policies of the speaker (see below) largely based?
" My sole aim is profit. By making a profit I serve the public by producing the goods they need and I employ many workers in useful occupations. The only laws that guide me are the laws of the marketplace."
The economic policies of the speaker are largely base don the writings of
A. Karl Marx
B. Adam Smith
C. Robert Owen
D. John Stuart Mill.
Given these options, the only possible correct answer is B. This is a statement that could not be based on the ideas of any of these thinkers other than Adam Smith.
Adam Smith is best known for his idea of the "invisible hand" of the market. He says that the economic decisions that are made in a society must be made by the demands of the market, not by any kind of governmental policies. This is very much in line with the last line of the statement you have given us.
All of the other people that you mention were more or less opposed to the capitalist system. All of them were, to one degree or another, more receptive to socialist ideas.