Deduces it is wrong to be led astray (7)
I believe the answer is:
seduced
'be led astray' is the definition.
(I've seen this before)
'deduces it is wrong' is the wordplay.
'it is wrong' indicates anagramming the letters.
'deduces' is an anagram of 'SEDUCED'.
'to' acts as a link.
(Other definitions for seduced that I've seen before include "Beguiled" , "Lured -- enticed" , "Someone attracted to a belief" , "Led astray" .)