Final answer:
The statement is false because only explicitly defined permissions in the profile or permission set metadata are committed to Git, and therefore turned off permissions will not be retrieved on commit.
Step-by-step explanation:
The statement 'Turned off system permissions are retrieved when you commit a profile using the Full Profiles & Permission Sets Git operation' is false. When managing profiles and permission sets in version control systems like Git, only the permissions explicitly defined in the profile or permission set metadata are committed. If a permission is turned off or not specified, it does not get included in the profile's metadata file and thus will not be retrieved or reapplied upon committing and deploying the profile using Git operations. It is important to ensure that all the desired permissions are correctly set and included in the metadata before committing them to version control.