I just took the test the answer is B.
<span>This result proposes that private parties (consumers and producers) can solve the problem of externalities on their own. = <span>Coase theorem.
</span>Coase theorem proposes that "</span><span>when there is a disagreement about property rights, those parties concerned can find a way to come to a mutually beneficial outcome by means of bargaining or negotiating terms," according to its definition.</span><span>
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<span>Many intellectuals and many of those working in development believe that the size of the world's population and its accelerated growth is the greatest problem and the gravest threat to humanity. Clearly, the ratio of the number of people to the amount of food available has an impact on nutrition, but how do these two factors interact? At the end of the eighteenth century the British political economist Thomas Malthus speculated that population growth could soon surpass production and food supply. By the end of the twentieth century, this had not happened, but malnutrition was widespread.</span>
