What should be the primary concern when collecting evidence at a crime scene?

When collecting evidence at a crime scene, the primary concern should be to ensure that the evidence is preserved and documented correctly. This is crucial because the integrity of evidence can significantly impact the outcome of an investigation and any subsequent legal proceedings. Proper preservation prevents contamination, degradation, or loss of evidence, which could ultimately undermine the prosecution's case or lead to wrongful conclusions.

Correct documentation, including accurate descriptions, photographs, and chain of custody records, establishes the authenticity and reliability of the evidence. This meticulous attention to detail supports the investigation's credibility and helps ensure that the evidence can be admissible in court, thereby playing a vital role in the pursuit of justice.

Other options may touch on elements relevant to investigations, such as addressing media concerns or managing time efficiently, but these factors do not take precedence over the preservation and documentation of evidence, which is foundational to effective crime scene investigation.