__ for (choose) (3)
I believe the answer is:
opt
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">for choose</span>' is the definition.<br/ ><span class="explanation-format__explanation">(both can mean to pick something)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for opt that I've seen before include "End or act of shutting" , "Pick from pot" , "Plump for" , "Make a choice" , "Prefer, choose" .)