Plato’s idea of a perfect society is described in
a.
theory of forms.
c.
the aristocracy.
b.
utopia.
d.
republic.

     Your answer would be Utopia.

I hope this helps:)

The Correct Answer is D.

"The Republic".

Explanation:

Plato wrote, "The Republic" in which he described an ideal society. Plato's ideal society is an aristocracy that was headed by the intellectuals. Wise people deciding for every one good and the right. Because smart people have true knowledge and wisdom to judge the world. According to Plato, a just society is when where the different parts of the society are well balanced and don't interfere with each other.