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    Question

    In each of the questions given below, four words are given in bold. These four words may or may not be in their correct position. The sentence is then followed by options with the correct combination of words that should replace each other in order to make the sentence grammatically and contextually correct. Find the correct combination of words that replace each other. If the sentence is correct as it is, select ‘E’ as your option.

    Ascertain (A) any other virus in history, SARS-CoV-2

    is the first one responsible (B) for a pandemic in an era when it is possible (C) to quickly, cheaply and universally unlike (D) the unique genomic structure of a pathogen.
    A Only A-B Correct Answer Incorrect Answer
    B A-B and C-D Correct Answer Incorrect Answer
    C Only A-D Correct Answer Incorrect Answer
    D A-C and B-D Correct Answer Incorrect Answer
    E No exchange required Correct Answer Incorrect Answer

    Solution

    A is incorrect at its place. It should be exchanged. It can be exchanged with D and vice versa. Unlike any other virus in history, SARS-CoV-2 is the first one responsible for a pandemic in an era when it is possible to quickly, cheaply and universally ascertain the unique genomic structure of a pathogen.

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