Life is a tale told by . . . . . . . . idiot.
Life is a tale told by . . . . . . . . idiot. Correct Answer an
Here, the sentence talks about the 'idiot' as general class of things. Since we are referring to general things, we need to use the definite article 'a/an'. The word 'idiot' starts with a vowel and therefore 'an' will be used.