Which of the following is NOT a benefit of excluding certain pieces of evidence?

The choice that indicates a benefit of excluding certain pieces of evidence is the one about encouraging unlawful evidence collection. This option correctly identifies a condition that is not a benefit of excluding evidence. Excluding evidence is done to uphold legal standards and protect trial processes, ensuring that the evidence presented is collected lawfully and is relevant to the case. When evidence is excluded, it often serves to maintain the trial's credibility and ensure that the integrity of the judicial system is preserved.

By contrast, encouraging unlawful evidence collection would undermine the fairness and reliability of the trial, leading to potential miscarriages of justice. Therefore, this choice is clear in indicating a practice or outcome that runs contrary to the very purpose of why evidence may be excluded in legal proceedings.