Haven't a clue

[Sameer]

Test No. incompl/elem-31 "Responses (4)", question 4

Mike: 'Guess how much income tax I pay.'
Jane: '.........'

(a) I haven't a thought.
(b) I haven't a belief.
(c) I haven't a point.
(d) I haven't a clue.

Test No. incompl/elem-31 "Responses (4)", answer 4

Mike: 'Guess how much income tax I pay.'
Jane: 'I haven't a clue.'

Correct answer: (d) I haven't a clue.

Your answer was: incorrect
Mike: 'Guess how much income tax I pay.'
Jane: 'I haven't a point.'
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please explain this to me.

thanks

[Alan]

This means I have no idea. A clue is something that helps you find the answer to a puzzle or problem. A police detective looks for clues to help find the answer to a crime.
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English as a Second Language
You can read my ESL story Phrasal Verbs/take