Answer:
Probable cause
Explanation:
Probable cause is created to enable the polices to react in emergency situation
In most cases, a police has no right to conduct an investigation into a private property without a warrant.
But, If the police has a strong reason to believe that a crime has been committed (such as hearing a gun shot or screams for help) , the police has the right to conduct the investigation without the warrant under the protection of probable cause.
