Not long back in Japan a mysterious nerve gas affected a large number of people ........

English ( Master) Sentence Improvement

Direction:-In questions given below, a part of the sentence is italicised and underlined. Below are given alternatives to the italicised part which may improve the sentence. Choose the correct alternative. In case no improvement is needed, option 'D' is the answer.

Not long back, in Japan, a mysterious nerve gas affected a large number of people.