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. If there is ‘No error’, the answer is (5). (Ignore errors of punctuation, if any).  Despite repeated warnings, the (1)/ illegal mining activities continues (2)/ in several regions, posing (3)/ serious environmental threats (4)/ No error (5)