When must an arrested suspect be advised of their constitutional rights?

An arrested suspect must be advised of their constitutional rights during any custodial interrogation, which typically occurs when they are in a police station or similar environment. This requirement stems from the Miranda v. Arizona ruling, which established that individuals must be informed of their rights to remain silent and to have an attorney present when they are in custody and subject to interrogation.

The context of option B suggests that advising suspects in their home or at a police station is appropriate, as it highlights the importance of the environment in which a suspect is considered to be in custody. The requirements apply regardless of whether the questioning occurs in a public or private space; the key is whether the suspect is in a situation of custody, which is characterized by a significant deprivation of liberty. Therefore, it is essential to ensure suspects are aware of their rights in settings designated for such advisement, such as a police station.

The other choices do not encapsulate the complete understanding of when constitutional rights must be conveyed. Advising suspects only at the moment of arrest or when questioning begins does not adequately represent the standard established by the courts, which emphasizes the need for such advisement whenever a suspect is in custody and interrogated.