What must the approving authority ensure regarding the financial liability investigation process?

The correct choice emphasizes the importance of the effectiveness of the financial liability investigation process in identifying property loss or damage quickly. The approving authority's role is to ensure that the process is not only thorough but also operates efficiently to detect and address issues of accountability regarding government property. This aspect is critical as delays in identifying losses can hinder proper accountability measures and potentially lead to further losses or misuse of property.

In contrast, the other options suggest various conditions or limitations that do not align with the primary purpose of the investigation:

• The first option implies that an investigation only needs to be completed if substantial evidence exists, which undermines the proactive nature of identifying issues.

• The second choice suggests that the investigation should be conducted exclusively by outside civilians, which is not a requirement and may not ensure the necessary military context and understanding.

• The last option proposes that investigations can be delayed for administrative reasons, which could negatively impact the timely resolution and accountability process that the investigation aims to uphold.

Overall, ensuring that the system is effective and prompt in addressing property loss or damage aligns with the core objectives of financial liability investigations as outlined in the regulations.