Translation:This secretary works for the director.
The right answer should be modified to include "This" as an appropriate translation for "Ta".
Ah, OK. I think I put 'That'. I can't even distinguish the pair in English so I probably shouldn't be weighing in.
Well, generally "dla" means "for" (especially for someone) and "z" is "from", "out of" and "made of".
But different languages take different prepositions, so for example some situations that need "for" in English will need a different preposition in Polish.