Which of the following was not a reason why natural disasters unpredictably destroyed cities?

A.
Cities were located near danger zones for earthquakes, floods, droughts, or volcanic eruptions.
B.
Cities lacked strong military defenses, and fire often was used as a weapon.
C.
Governments were unprepared and did not have evacuation plans.
D.
Poor building materials meant that structures were destroyed easily.

Please select the best answer from the choices provided.

B. Cities lacked strong military defenses, and fire often was used as a weapon.