What are the basic steps in a criminal investigation?

The correct answer outlines a systematic approach to conducting a criminal investigation, which is essential for ensuring that all relevant evidence is collected and documented properly.

Securing the scene is the first crucial step that helps protect the integrity of the evidence and prevents contamination or tampering. Once the scene is secured, investigators move on to collecting evidence, which can include physical items, photographs, and documentation that contribute to understanding what occurred during the crime. Interviewing witnesses is also a vital step, as it allows investigators to gather firsthand accounts that can provide insights and lead to additional evidence or information. Finally, filing reports is necessary to document the investigation's findings formally and can be utilized later in legal proceedings.

This comprehensive approach ensures that investigations are thorough, organized, and legally sound, thereby increasing the likelihood of successfully solving the case and achieving justice. Other options focus on various aspects of the investigative process but lack the systematic order and completeness seen in the correct answer.