Meaning of "I have no idea why"

[Alisa]

English Language Tests, Intermediate level

ESL/EFL Test #709 "Time of the Year", question 3

A: I have no ......... why. Perhaps you'd better tell me.

(a) feeling
(b) thought
(c) belief
(d) idea

English Language Tests, Intermediate level

ESL/EFL Test #709 "Time of the Year", answer 3

A: I have no idea why. Perhaps you'd better tell me.

Correct answer: (d) idea
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idea?

Alisa

[Alan]

'I have no idea why' means 'I can't imagine why'.

Alan
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English as a Second Language
You can read my ESL story Here comes 2004...