Is concerned (5)
I believe the answer is:
cares
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">is concerned</span>' is the definition.<br/ ><span class="explanation-format__explanation">(to care is show concern or worry)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for cares that I've seen before include "Feels interest or concern" , "Has concerns or interest" , "Minds" , "Worries, anxieties" .)