Explanation:

- Vouching: This is the process of checking the authenticity of financial documents to ensure accuracy in accounting records.

- Verification: This involves proving the truth or confirmation of something. It’s often used in various fields to ensure information or data is accurate and reliable.

- Inspection: This is a careful examination or scrutiny of something, often to assess quality or condition.

- Auditing: This is an official financial examination of an organization's accounts, typically done by an independent body.

The term that means "proving the truth or confirmation" is Verification.