Which flag is used in RPM to verify a package?

The flag used for verifying a package in the RPM (Red Hat Package Manager) is indeed -V. When this option is employed, RPM checks the files associated with the specified package against their recorded checksums, file sizes, and other attributes stored in the RPM database. This verification process helps ensure the integrity of the package, confirming that the files have not been altered or corrupted since the installation.

In terms of the remaining options, -v typically refers to verbose output and is generally used to provide more detailed information during an operation rather than for verification. -I is used for querying information about a specific package, and -C is used to check the consistent state of the files within the RPM database after installation. Each of these options serves distinct purposes, making -V the only flag specifically designated for the verification of packages.