De or het contentplanning?

The correct Dutch article is:

de contentplanning

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

This word is not in the word lists we use to double-check answers.

How to use contentplanning

the contentplanningde contentplanning
this contentplanningdeze contentplanning
that contentplanningdie contentplanning
our contentplanningonze contentplanning
your contentplanningjouw contentplanning
every contentplanningelke contentplanning
which contentplanning?welke contentplanning?
a big contentplanning / the big contentplanningeen grote contentplanning, de grote contentplanning