De or het nestbescherming?

The correct Dutch article is:

de nestbescherming

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

How to use nestbescherming

the nestbeschermingde nestbescherming
this nestbeschermingdeze nestbescherming
that nestbeschermingdie nestbescherming
our nestbeschermingonze nestbescherming
your nestbeschermingjouw nestbescherming
every nestbeschermingelke nestbescherming
which nestbescherming?welke nestbescherming?
a big nestbescherming / the big nestbeschermingeen grote nestbescherming, de grote nestbescherming