De or het stemcoaching?

The correct Dutch article is:

de stemcoaching

Rule Words ending in -ing: almost always de. See the rule
Meaning (Dutch) begeleiding om je stem optimaal en gezond te gebruiken. Het richt zich op aspecten als toonhoogte, volume, articulatie, tempo en intonatie.

How to use stemcoaching

the stemcoachingde stemcoaching
this stemcoachingdeze stemcoaching
that stemcoachingdie stemcoaching
our stemcoachingonze stemcoaching
your stemcoachingjouw stemcoaching
every stemcoachingelke stemcoaching
which stemcoaching?welke stemcoaching?
a big stemcoaching / the big stemcoachingeen grote stemcoaching, de grote stemcoaching

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