Final answer:
A suspect's waiver of Miranda rights is valid if made voluntarily and intelligently, even without an attorney present, per Montejo v. Louisiana. option d is answer
Step-by-step explanation:
The question pertains to the validity of a Miranda waiver when a suspect with an attorney waives their rights during an interrogation without the attorney present. Under Miranda v. Arizona, the police are required to inform suspects of their rights before interrogation, and suspects are entitled to an attorney during questioning.
In Montejo v. Louisiana, the U.S. Supreme Court held that a defendant may waive their right to counsel during a police interrogation even after asserting that right at an arraignment or similar proceeding. Therefore, a waiver of Miranda rights is considered valid even without the presence of an attorney, as long as the waiver is made voluntarily and intelligently. option d is answer