Sensible questions read out (4)
I believe the answer is:
wise
'sensible' is the definition.
(thesaurus)
'questions read out' is the wordplay.
'questions' becomes 'whys'.
'read out' indicates a 'sounds like' (homophone) clue.
'whys' sounds like 'WISE'.
(Other definitions for wise that I've seen before include "Showing sagacity" , "Old way" , "Having good judgement" , "Experienced, knowing" , "Judicious" .)