Which command will create a tarball using the highest compression utility and allow for verbose output?

The choice that creates a tarball using the highest compression utility and allows for verbose output is one that combines the correct options for both compression and verbosity.

The command that fits this description is the one that includes the 'cJvf' flags.

• The 'c' flag is for creating a new tar archive.
• The 'J' flag specifies the use of XZ compression, which is considered one of the highest compression options available among the common utilities.
• The 'v' flag stands for verbose, meaning it will output the names of the files being archived, allowing you to see the progress of the operation.
• The 'f' flag indicates that the next argument will be the name of the archive file.

Using the combination of 'cJvf' therefore effectively creates a compressed archive with verbose output, utilizing the highest available compression method with XZ. While other combinations in the choices either utilize different compression methods or don’t provide the verbosity needed for tracking the progress of file archiving, this specific combination meets all the required criteria.