Which of the following is a consequence of the exclusionary rule?

The exclusionary rule is a legal principle that prohibits the use of evidence obtained in violation of a defendant's Fourth Amendment rights, which protect against unreasonable searches and seizures. As a consequence of this rule, any evidence that is not obtained legally cannot be used in court. This ensures that law enforcement follows constitutional guidelines and upholds the rights of individuals.

The implication of this rule is significant: it serves both as a deterrent against unlawful police behavior and as a safeguard for the integrity of the judicial process. If evidence is obtained without adhering to these legal standards, it will be excluded from trial proceedings, reinforcing the need for police to gather evidence properly.

While the other options touch upon elements of legal procedure and rights (like the right to a jury trial or requirements for warrants), they do not accurately reflect the specific consequences of the exclusionary rule. Thus, the correct answer highlights the foundational concept that all evidence presented at trial must indeed be obtained legally in order to be admissible.