D. Investigation

Explanation:
The answer is “D. Investigation” because investigation is not part of the presentation process of digital evidence. Key elements of presenting digital evidence include identification, presentation, analysis, and preservation, all of which ensure the integrity and reliability of the evidence in legal proceedings.

Run-down of reasoning:

• While investigation is important in collecting digital evidence, the presentation of digital evidence focuses on steps such as identification, preservation, and analysis to maintain its legal validity. Investigation is part of the process leading to evidence gathering but not part of its presentation.