Why were the walls of Athens a disadvantage during the Peloponnesian War? They failed at keeping the Spartans out of the city.
They prevented Athens from trading for supplies.
They cut off Athens from its supply of water.
They led to overcrowding, which resulted in disease.

Correct answer is They led to overcrowding, which resulted in disease.

Explanation:

Last option is the correct one, as after Pericles ordered that all citizens of Athens should retreat to the city a great plague erupted. A lot of people died, including Pericles himself. Athenians were forced to surrender and destroy the city-walls.

All other options are thus wrong, because were not the main reason for the surrender.

answer; health-related quality of life;

yes he has a little extra