Read each sentence carefully 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 marked (a), (b), (c) or (d). Choose the option corresponding to that part. If the sentence is correct as it is, choose “No error (e)” as your answer. Ignore errors of punctuation, if any. Information obtained through intelligence networks (a) must be analysed carefully (b) so as to avoid drawing conclusions (c) that may later prove to be misleading or inaccurate (d). No error (e)