When generating dynamic credentials, Vault also creates associated metadata, including information like time duration, renewability,...

Comprehensive and Detailed in Depth Explanation:

A:Secrets are the credentials themselves, not the metadata. Incorrect.

B:Tokens authenticate clients, not the metadata for credentials. Incorrect.

C:A lease is metadata tied to dynamic secrets, managing their lifecycle (TTL, renewability). Correct.

D:Secrets engines generate secrets, not the metadata. Incorrect.

Overall Explanation from Vault Docs:

“With every dynamic secret… Vault creates a lease: metadata containing TTL, renewability, etc.”