De or het sportmarketing?

The correct Dutch article is:

de sportmarketing

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

How to use sportmarketing

the sportmarketingde sportmarketing
this sportmarketingdeze sportmarketing
that sportmarketingdie sportmarketing
our sportmarketingonze sportmarketing
your sportmarketingjouw sportmarketing
every sportmarketingelke sportmarketing
which sportmarketing?welke sportmarketing?
a big sportmarketing / the big sportmarketingeen grote sportmarketing, de grote sportmarketing