Read the sentence to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. The letter of that part is the answer. If there is ‘No error’, the answer is (5). (Ignore errors of punctuation, if any). The measures, if they are ordered, (1)/  threaten to upended a business (2)/ expected to generate more than (3)/ $300 billion in revenue this year.(4) no error (5)