De or het attitudevorming?

The correct Dutch article is:

de attitudevorming

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

How to use attitudevorming

the attitudevormingde attitudevorming
this attitudevormingdeze attitudevorming
that attitudevormingdie attitudevorming
our attitudevormingonze attitudevorming
your attitudevormingjouw attitudevorming
every attitudevormingelke attitudevorming
which attitudevorming?welke attitudevorming?
a big attitudevorming / the big attitudevormingeen grote attitudevorming, de grote attitudevorming