Calling for a declaration (10)
I believe the answer is:
profession
I believe this is a double definition.
'calling' is the first definition.
(thesaurus)
'a declaration' is the second definition.
(profession is a kind of declaration)
'for' is the link.
(Other definitions for profession that I've seen before include "announcement" , "Job" , "Occupation; declaration (of belief)" , "career?" , "statement" .)