De or het trotsering?

The correct Dutch article is:

de trotsering

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

How to use trotsering

the trotseringde trotsering
this trotseringdeze trotsering
that trotseringdie trotsering
our trotseringonze trotsering
your trotseringjouw trotsering
every trotseringelke trotsering
which trotsering?welke trotsering?
a big trotsering / the big trotseringeen grote trotsering, de grote trotsering