De or het herintegratieondersteuning?

The correct Dutch article is:

de herintegratieondersteuning

Rule Words ending in -ing: almost always de. See the rule

How to use herintegratieondersteuning

the herintegratieondersteuningde herintegratieondersteuning
this herintegratieondersteuningdeze herintegratieondersteuning
that herintegratieondersteuningdie herintegratieondersteuning
our herintegratieondersteuningonze herintegratieondersteuning
your herintegratieondersteuningjouw herintegratieondersteuning
every herintegratieondersteuningelke herintegratieondersteuning
which herintegratieondersteuning?welke herintegratieondersteuning?
a big herintegratieondersteuning / the big herintegratieondersteuningeen grote herintegratieondersteuning, de grote herintegratieondersteuning