A key element of the Fourth Amendment is that searches and seizures must be

serious.
merciful.
practical.
reasonable.

Respuesta :

The correct answer that would best complete the given statement above would be the last option: REASONABLE. A key element of the Fourth Amendment is that searches and seizures must be reasonable. The fourth amendment was added to the constitution in order to prevent abuse of authority. Hope this answer helps.

I believe the answer is: Reasonable

The fourth amendment banned the police department from conducting search without a warrant under normal circumstances. But still provide them to make necessary actions under emergency situations (such as if they heard a gun shot or scream of distress)