De or het volumevergroting?

The correct Dutch article is:

de volumevergroting

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

How to use volumevergroting

the volumevergrotingde volumevergroting
this volumevergrotingdeze volumevergroting
that volumevergrotingdie volumevergroting
our volumevergrotingonze volumevergroting
your volumevergrotingjouw volumevergroting
every volumevergrotingelke volumevergroting
which volumevergroting?welke volumevergroting?
a big volumevergroting / the big volumevergrotingeen grote volumevergroting, de grote volumevergroting