De or het sportsponsoring?

The correct Dutch article is:

de sportsponsoring

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

How to use sportsponsoring

the sportsponsoringde sportsponsoring
this sportsponsoringdeze sportsponsoring
that sportsponsoringdie sportsponsoring
our sportsponsoringonze sportsponsoring
your sportsponsoringjouw sportsponsoring
every sportsponsoringelke sportsponsoring
which sportsponsoring?welke sportsponsoring?
a big sportsponsoring / the big sportsponsoringeen grote sportsponsoring, de grote sportsponsoring