It is a scientifically accepted a fact that laugh is b the best medicine to remove stress c and live...........

English ( Master) Nouns

It is a scientifically accepted (a)/ fact that laugh is (b)/ the best medicine to remove stress (c)/ and live a disease-free life.(d)/ No error (e)

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Explanation:

Correct option 2: b

The sentence contains a grammatical error in part (b). The word "laugh" is incorrectly used as a noun. The correct noun form is "laughter." Therefore, the corrected sentence should read: "It is a scientifically accepted fact that laughter is the best medicine to remove stress and live a disease-free life." The explanation correctly identifies this mistake, and option (b) is the correct choice to indicate where the error occurs.