The response that best explains why the disaster theory of Mayan collapse has been rejected by modern historians is:
There is no evidence of widespread destruction to support it.
This indicates that despite theories suggesting a sudden disaster led to the collapse, archaeological and historical evidence does not support the idea of a catastrophic event causing the widespread downfall of Mayan civilization. Instead, more gradual factors such as environmental, social, and political changes are often considered to have contributed to their decline.