De or het relatiecoaching?

The correct Dutch article is:

de relatiecoaching

Rule Words ending in -ing: almost always de. See the rule
Meaning (Dutch) actieve en doelgerichte vorm van begeleiding om de interactie en verbinding tussen partners, familieleden of collega's te verbeteren.

How to use relatiecoaching

the relatiecoachingde relatiecoaching
this relatiecoachingdeze relatiecoaching
that relatiecoachingdie relatiecoaching
our relatiecoachingonze relatiecoaching
your relatiecoachingjouw relatiecoaching
every relatiecoachingelke relatiecoaching
which relatiecoaching?welke relatiecoaching?
a big relatiecoaching / the big relatiecoachingeen grote relatiecoaching, de grote relatiecoaching

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).