Only the text and the radio button of closing reasons are clickable. However, a full-width clickable area would be easier to hit and less frustrating. IIRC, this was also possible in the past.
Current situation:
Proposed situation:
Only the text and the radio button of closing reasons are clickable. However, a full-width clickable area would be easier to hit and less frustrating. IIRC, this was also possible in the past.
Current situation:
Proposed situation:
This seems to have been implemented and it's currently live. Not sure when it was enacted, though (it's not in Recent feature changes to Stack Exchange as far as I can tell), so maybe a team member can include it in its proper spot there?