According to theCHFI v11 Procedures and Methodologydomain, ensuring precision and reliability in a digital forensic laboratory requires aholistic approachthat integrates multiple best practices rather than relying on a single control. CHFI v11 explicitly emphasizes that forensic accuracy and legal defensibility are achieved only whenall critical quality assurance components work together.

Regular equipment maintenanceensures that forensic hardware and software operate correctly and consistently, preventing errors caused by malfunctioning tools.Adherence to industry standards, such asISO/IEC 17025andASCLD/LAB accreditation, establishes validated procedures, standardized workflows, and documented methodologies that courts recognize as trustworthy. These standards ensure repeatability, reproducibility, and credibility of forensic results.

Equally important iscontinuous investigator training, as digital technologies, file systems, operating systems, and attack techniques evolve rapidly. CHFI v11 stresses that investigators must stay current with new tools, emerging threats, and updated forensic methods to avoid analytical errors and misinterpretation of evidence.

CHFI v11 clearly states that the absence of any one of these elements—maintenance, standards compliance, or training—can compromise forensic integrity, lead to inaccurate conclusions, and result in evidence being challenged or rejected in legal proceedings.

Therefore, the correct and CHFI v11–verified answer isAll of these, makingOption Bthe most accurate choice.