Which of the following should be the THIRD sentence after rearrangement?
A
B introduces the paragraph followed by E. 'This' in A refers to the pollution, poverty, etc, mentioned in E and C talks more about the ' web' mentioned in A. Therefore, BEAC is a link. D is a generic statement and should ideally be placed at the end. So, the logical order of sentences in the paragraph is BEACD.
So, the third sentence after rearrangement is (A).