De or het concurrentieverstoring?

The correct Dutch article is:

de concurrentieverstoring

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

How to use concurrentieverstoring

the concurrentieverstoringde concurrentieverstoring
this concurrentieverstoringdeze concurrentieverstoring
that concurrentieverstoringdie concurrentieverstoring
our concurrentieverstoringonze concurrentieverstoring
your concurrentieverstoringjouw concurrentieverstoring
every concurrentieverstoringelke concurrentieverstoring
which concurrentieverstoring?welke concurrentieverstoring?
a big concurrentieverstoring / the big concurrentieverstoringeen grote concurrentieverstoring, de grote concurrentieverstoring