please tell me the correct answer please i will mark it as brainiest please i am spending so much point s please
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Explanation:
If starch is mixed with iodine, it gives a blue-black colour.
The 'boiled and mashed potato' and a 'slice of bread' contain starch and all other options are not containing starch. So, 'boiled and mashed potato' and a 'slice of bread' will give blue-black colour when it tested with iodine.
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