What action signifies the completion of an arrest?

The action that signifies the completion of an arrest is the act of restraining the suspect. When a police officer physically restrains an individual, it indicates that the officer has taken control over that person, which is a critical step in the arrest process. Restraint often involves handcuffing or otherwise limiting the suspect's ability to move freely, thereby solidifying the authority of the law enforcement officer and marking the transition from a mere detention to a formal arrest.

Although reading the suspect their rights, transporting them to jail, and limiting their movements are all important components associated with the arrest process, they do not, by themselves, signify that the arrest is complete. Reading the rights occurs after the arrest has been initiated to inform the suspect of their rights, while transporting refers to the process of moving the suspect after the arrest has been made. Limiting the suspect's movements is part of the restraint process but does not encompass the entirety of what it means to complete an arrest.