Questions & Answers about Omregistreringen koster mye.
The base form is omregistrering. That is the indefinite singular form: a re-registration / re-registration.
The sentence uses omregistreringen, which is the definite singular form: the re-registration.
In Norwegian, definiteness is usually shown by adding an ending to the noun instead of using a separate word like English the.
So:
- en omregistrering = a re-registration
- omregistreringen = the re-registration
The -en ending here marks the noun as definite singular.