Answer:
Option D.
Explanation:
Weakened the power of Athens, is the right answer.
The Peloponnesian war took place in the period between 431 to 404 BC. It was fought between the two city-states of Greece; Athens and Sparta. This war resulted in a major defeat of Athens by the Spartans. The impact of the war can be seen in the fact that the war reshaped the economic and the political relations of both Athens and Sparta and ruined the friendly methods of settling a conflict between the city-states.
