Question

What did Plato critique in his book The Republic?
a. Communism
b. Socialism
c. Democracy
d. Isolationism

Answer 1

One of Plato's main critiques in his book the "Republic" is regarding "Democracy," since he feels that in reality, Democracies lead to the poor overthrowing the rich, and demagogues rising to power. 

Answer 2

 One thing Plato critiques in his book The Republic is Democracy