Which of the following is not a reason why pandemic diseases led to the destruction of early cities?
a. cities lacked basic sanitation, and diseases spread through sewage.
b. spaces were overcrowded, allowing for faster transmission of diseases.
c. governments were unprepared and did not have necessary evacuation plans to accommodate the sick.
d. medicine was undeveloped, and treatment was inadequate.

I'm pretty sure that the answer is C. Governments were unprepared and did not have necessary evacuation plans to accommodate the sick.

Remember it asks what's NOT a reason.
It wouldn't be A because cities DID lack basic sanitation and diseases spreaded through sewage.
It won't be B because spaces WERE overcrowded so diseases transferred faster.
It WOULD be C because government might have tried to help, but they were unprepared and didn't have evacuation plans for the sick.
It wouldn't be D because very little medicine was developed and treatment was inadequate.