Positive response (3)
I believe the answer is:
yes
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">positive response</span>' is the definition.<br/ ><span class="explanation-format__explanation">(positive response to a question)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for yes that I've seen before include "Confirmation" , "I agree" , "Positive response" , "Affirmative response" , "Indeed" .)