Which of the following best describes essential elements to preserve admissibility of digital evidence?

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Preserving admissibility hinges on proving the evidence is authentic and unaltered by creating a clear record of its custody and integrity. This means documenting every handling and transfer so you can show who had access, when, and where the evidence moved. It also requires verifying integrity with hash checks—generating a hash when the data is created or copied and re-checking it at each step to confirm nothing changed. Limiting access to authorized personnel and stamping each action with precise timestamps builds an auditable trail that resists tampering or disputes later on.

Other choices miss these essentials. Simply photographing devices adds documentation but doesn’t establish custody or prove data integrity. Publishing the evidence to a public log can expose sensitive information and undermine control and authenticity. Erasing the original after copying destroys the source and defeats reliability, making it difficult to defend admissibility.