Question

Correct the sentence below:

Industrialization and modern methods of insect control have improved the standard of living around the globe while at the same time they have introduced some 100,000 dangerous chemical pollutants, having gone virtually unregulated since they were developed more than 50 years ago.(A) while at the same time they have introduced some 100,000 dangerous chemical pollutants, having(B) while at the same time introducing some 100,000 dangerous chemical pollutants that have(C) while they have introduced some 100,000 dangerous chemical pollutants at the same time, which have(D) but introducing some 100,000 dangerous chemical pollutants at the same time that have(E) but at the same time introducing some 100,000 dangerous chemical pollutants, having

Answer 1

B). While at the same time introducing some 100,000 dangerous chemical pollutants that have.

Step-by-step explanation:

As per the question, option B i.e. 'while at the same time introducing some 100,000 dangerous chemical pollutants that have' displays the sentence that correctly revises the underlined phrase as it appropriately employs the 'introducing'(in simple present form) which makes it correct both grammatically and syntactically. The other options are either grammatically incorrect(incorrect use of modifier in option C) or involves an incorrect cause-effect scenario(in options A and D). Therefore, option B is the correct answer.