De or het stressbestendigheid?

The correct Dutch article is:

de stressbestendigheid

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

How to use stressbestendigheid

the stressbestendigheidde stressbestendigheid
this stressbestendigheiddeze stressbestendigheid
that stressbestendigheiddie stressbestendigheid
our stressbestendigheidonze stressbestendigheid
your stressbestendigheidjouw stressbestendigheid
every stressbestendigheidelke stressbestendigheid
which stressbestendigheid?welke stressbestendigheid?
a big stressbestendigheid / the big stressbestendigheideen grote stressbestendigheid, de grote stressbestendigheid