Nutanix offers several ways to recover data, ranging from full VM reverts to granular file-level access. In this scenario, the key requirement is to access historical data (from four days ago) without modifying or destroying the current production VM ' s state. Self-Service Restore (SSR) is the most efficient and least disruptive method to achieve this. SSR, which requires Nutanix Guest Tools (NGT) to be installed, allows an administrator or user to mount a historical snapshot disk directly to the existing VM as a new, temporary volume. This allows the QA team to browse the file system of the " four-day-old " state and copy the specific older browser version they need while the production application continues to run undisturbed with its new code and patches. An " In-place Restore " (Option C) would be disastrous here because it would roll back the entire VM, overwriting the new patches. A " Clone " (Option D) would work but is less efficient as it consumes additional vCPU, RAM, and full storage overhead for an entirely new VM. SSR provides the surgical precision needed for file-level testing while maintaining the integrity of the live production environment.