Final answer:
The best definition of admissible evidence is relevant evidence to a proceeding not excluded by a judge.
Step-by-step explanation:
The best definition of admissible evidence is A. Relevant evidence to a proceeding that has not been excluded by a judge. Admissible evidence is that which is deemed legally sufficient to be considered by a judge or jury in a case. It must be relevant to the case and cannot be excluded because of certain legal rules. For instance, evidence is commonly excluded if it is deemed to be prejudicial, irrelevant, or obtained in violation of a defendant’s rights. Proceedings in the courtroom depend greatly on the presentation of admissible evidence, which is why both the defense and prosecution meticulously prepare the evidence they wish to present.
In a criminal trial, the jury or judge (in a bench trial) must be convinced of the defendant’s guilt "beyond a reasonable doubt" with the evidence presented. Conversely, in a civil case, the plaintiff must prove the case "beyond a preponderance of the evidence." Thus, the quality and admissibility of evidence can be a decisive factor in legal proceedings.