The BEST indication that an organization's vulnerability management process is operating effectively is that remediation efforts are prioritized. This is because prioritizing remediation efforts helps to ensure that the most critical and urgent vulnerabilities are addressed first, based on their severity, impact, and exploitability. Prioritizing remediation efforts also helps to optimize the use of resources and time for mitigating vulnerabilities and reducing risks. The other options are not as indicative of an effective vulnerability management process, because they either involve communicating (A), approving (B), or reviewing C aspects that are not directly related to remediating vulnerabilities.

The responsibility of an organization to protect its assets, including IT infrastructure and information, falls under the broader umbrella of governance, risk management, and compliance (GRC). Governance ensures that organizational activities, like managing IT operations, are aligned with the business's goals, risk management involves identifying, assessing, and mitigating risks, and compliance ensures that the organization adheres to laws, regulations, and policies.
Reference = While I can't provide direct references from the Cybersecurity Audit Manual, the concept of GRC is widely recognized in cybersecurity frameworks and best practices, such as those outlined by ISACA and other industry standards.

Hashing is a method used to ensure the integrity of digital assets. It involves applying a hash function to the digital asset's data to produce a unique hash value. This value acts as a digital fingerprint; any alteration to the data will result in a different hash value when the hash function is reapplied. This makes it easy to detect unauthorized changes to the data, thereby protecting the integrity of the digital assets.

A limitation of intrusion detection systems (IDS) is that they cannot detect application-level vulnerabilities. An IDS is a tool that monitors network traffic or system activity and alerts on any suspicious or malicious events. However, an IDS cannot analyze the logic or functionality of applications and identify vulnerabilities such as SQL injection, cross-site scripting, or broken authentication.

Explanation
The process that converts extracted information to a format understood by investigators is reporting. This is because reporting is a technique that involves presenting and communicating the results and findings of an investigation in a clear, concise, and accurate manner, using appropriate formats, such as tables, charts, graphs, etc. Reporting helps to convey the meaning and significance of the extracted information to the investigators, as well as other stakeholders, such as management, auditors, regulators, etc. The other options are not processes that convert extracted information to a format understood by investigators, but rather different techniques that are related to information extraction or analysis, such as ingestion (B), imaging C, or filtering (D).