Final answer:
The phrase referred to when individuals may be detained during the execution of a search warrant is being within the 'scope of the search warrant.' The Fourth Amendment outlines requirements for legal searches and the conditions that must be met for a search warrant to be issued.
Step-by-step explanation:
The persons present at the scene of a search warrant execution usually may be detained during the search and are referred to as being within the scope of the search warrant.
The Fourth Amendment of the United States Constitution safeguards individuals against unreasonable searches and seizures, ensuring warrants must be based on probable cause and specify the area to be searched and the persons or items to be seized.
The amendment places limits on both searches and seizures, with searches being efforts to locate illicit items and seizures being the taking of these items by the government. Moreover, the courts have established circumstances under which law enforcement officials can perform searches and seizures without a warrant, such as with the owner's consent, in exigent circumstances, or when the items are in plain view.