Answer:
d)
Step-by-step explanation:
Golden Mean is a concept that was emphasized by Aristoteles and he defined it as the desirable middle between two extremes, one of excess and the other of deficiency.
Therefore it would the the middle point that would be in equilibrium.
If he take a look at the options provided we can see that d) is the definition we just wrote above "Virtue is the mean between the extremes of deficiency and excess"
Thus, the correct answer is d)