De or het kernbeslissing?

The correct Dutch article is:

de kernbeslissing

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

How to use kernbeslissing

the kernbeslissingde kernbeslissing
this kernbeslissingdeze kernbeslissing
that kernbeslissingdie kernbeslissing
our kernbeslissingonze kernbeslissing
your kernbeslissingjouw kernbeslissing
every kernbeslissingelke kernbeslissing
which kernbeslissing?welke kernbeslissing?
a big kernbeslissing / the big kernbeslissingeen grote kernbeslissing, de grote kernbeslissing