Final answer:
The answer is false, as a person detained on reasonable suspicion cannot generally be required to participate in a show-up without probable cause. Detentions and arrests are guided by the Fourth Amendment, and suspects must be informed of their Miranda rights if taken into custody.
Step-by-step explanation:
It is false that a person who has been detained based on reasonable suspicion can be required to participate in a showup that is held at the location where he/she was stopped. While Terry v. Ohio established that police can stop and frisk a person based on reasonable suspicion, a showup is more involved and typically requires more than reasonable suspicion.
Most importantly, probable cause is typically necessary for a formal arrest or more involved detention, such as participating in a showup. When police conduct these detentions, they must do so in a manner that adheres to the protections against unreasonable searches and seizures afforded by the Fourth Amendment.
In the United States, the rules regarding detentions, arrests, and showups involve a careful balancing of an individual's rights against the needs of law enforcement to prevent and solve crimes. The requirement of probable cause applies to arrest warrants and generally prohibits detentions or custodial arrests without a warrant unless probable cause exists.
If taken into custody, suspects are also protected by Miranda rights, which include the right to be informed of their rights to remain silent and to have an attorney present during questioning, which serve to protect against self-incrimination as per the Fifth Amendment.