详解
Choice C is the best answer. In lines 59-64("not...market"), the author states, "Take fair trade coffee . . . for example: buying it might have good consequences, be virtuous, and also be the right way to act in a flawed market."The author is suggesting that in the example of fair trade coffee, all three perspectives about ethical economics—Adam Smith's belief in consequences dictating action, Aristotle's emphasis on character, and the third approach emphasizing the virtue of good actions—can be applied. These three approaches share "common ground"(line 64,"to...this"), as they all can be applied to the example of fair trade coffee without contradicting one another.
Choices A, B, and D are incorrect because they do not show how the three different approaches to ethical economics share common ground. Choice A simply states that there are "different views on ethics" in economics, choice B explains the third ethical economics approach, and choice D suggests that people "behave like a herd" when considering economics.