The proposal that unintended disorderly behavior can also signal that nobody cares about the community, leading to more serious disorder and crime, is known as:

broken windows theory is the correct answer.

Explanation:

The proposal that unintended disorderly behavior can also signal that nobody cares about the community, leading to more serious disorder and crime, is known as: broken windows theory. The broken windows theory says that evident signs of crime and anti-social behavior in urban areas encourage to further serious crime. Broken window theory states that if the problem that occurs in the given situation remains unattended then it will affect the people's attitude toward that situation and it will lead to further problems. This theory has been examined for supporting biased police methods.