It's got all the answers (3)
I believe the answer is:
key
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">it's got all the answers</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for key that I've seen before include "//www.crosswordgiant.com/crossword-clue/1252911/" , "Coral reef off southern coast of Florida" , "(3)" , "Essential; solution" , "One that locks" .)