Question
There is a long list of terror attacks in who the
security establishment failed to carry out a scientific probe In each question below, a sentence is given with a part of it printed in bold type. That part may contain a grammatical error. Each sentence is followed by phrases 1, 2, 3 and 4. Find out which phrase should replace the phrase given in bold to correct the error, if there is any, and to make the sentence grammatically meaningful and correct. If the sentence is correct as it is and ‘ No correction is required’ , mark 5 as the answer.Solution
who is used for living beings and which is used for non living things.
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