Answer:
The answer is B the Athenian city-state was defeated by the Spartans
Step-by-step explanation:
It would be another decade of warfare before the Spartan general Lysander defeated the Athenian fleet at Aegospotami. This defeat led to Athenian surrender. As a result, the Peloponnesian War was concluded. Simultaneous to the end of this conflict came to the end of the golden age of ancient Greece