Makes a selection (4)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">makes a selection</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for opts that I've seen before include "Settles" , "Makes a choice from a range" , "Elects" , "Chooses from a range of possibilities" , "Selects between alternatives" .)