De or het basketballerij?

The correct Dutch article is:

de basketballerij

Rule Words ending in -ij and -erij: usually de. See the rule
Meaning (Dutch) alles wat te maken heeft het spelen van basketbal

How to use basketballerij

the basketballerijde basketballerij
this basketballerijdeze basketballerij
that basketballerijdie basketballerij
our basketballerijonze basketballerij
your basketballerijjouw basketballerij
every basketballerijelke basketballerij
which basketballerij?welke basketballerij?
a big basketballerij / the big basketballerijeen grote basketballerij, de grote basketballerij

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).