Directions: Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select No improvement. The firing of the missile not only killed innocent persons and also created a political furore.

Explanation

The correct answer is "not only killed innocent persons but also" . Key Points In the given sentence, the use of the conjunction 'and' is incorrect . The conjunction 'and' is used to connect words of the same part of speech, clauses, or sentences, that are to be taken jointly . The conjunction 'but' is used to introduce a response expressing a feeling such as surprise or anger . The construction " not only...but (also) " is called correlative conjunction . It is used to present two related pieces of information . Both pieces of information are being presented as surprising or unexpected , with the second one being even more surprising than the first . Hence , the correct answer is option 3 . Correct Sentence : The firing of the missile not only killed innocent persons but also created a political furore . Additional Information Correlative conjunctions are sort of like tag-team conjunctions. They come in pairs, and you have to use both of them in different places in a sentence to make them work. They get their name from the fact that they work together (co-) and relate one sentence element to another. Correlative conjunctions include pairs such as"both/and", "either/or", "neither/nor", "not/but" and "not only/but also" .