kannai kasakkum sooriyano....?
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onion..onion...onion..
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lens...lens...lens...
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adhu....adhu...adhu....
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red ..red..red...
D
Correct answer
Explanation
The phrase 'kannai kasakkum sooriyano' means 'what irritates the sun?' in Tamil. This appears to be wordplay on 'kannai kasakkum' (eye-irritating) and the color red - red light is intense/direct, but the framing as a riddle makes this a lateral thinking puzzle rather than a factual science question. The answer plays on associations rather than literal fact.