By preferring the support of domestiek to that of foreign industry, [the individual] intends only his own security; and by directing that industry in such a manner as its produce may be of the greatest value, he intends only his own gain, and he is in this, as in many other eases, led by an invisible hand to promote an end which was no part of his intention. nor is it always the worse for the society that it was no part of it. by pursuing his own interest he frequently promotes that of the society more effectually than when he really intends to promote it. i have never known much good done by those who affected to trade for the publick good." this quote is representative of what economic system? a) capitalism b) communism c) socialism d) utopianism