De or het dossierdiploma?

The correct Dutch article is:

de dossierdiploma

This word is not in the word lists we use to double-check answers.

How to use dossierdiploma

the dossierdiplomade dossierdiploma
this dossierdiplomadeze dossierdiploma
that dossierdiplomadie dossierdiploma
our dossierdiplomaonze dossierdiploma
your dossierdiplomajouw dossierdiploma
every dossierdiplomaelke dossierdiploma
which dossierdiploma?welke dossierdiploma?
a big dossierdiploma / the big dossierdiplomaeen grote dossierdiploma, de grote dossierdiploma