Arrange the sentences in the correct sequence to form a coherent paragraph.
A. Their work is both unrecorded and largely unrecognised, even though in some parts of the world they handle as much as 20% of all waste.
B. Among those suffering from the global recession are millions of workers, who are not even included in the official statistics
C. In the developed countries they are the preferred ones since they recycle waste much more cheaply and efficiently than government or private corporations can.
D. These are the trash pickers, sorters and traders who extricate paper, cardboard and plastics from garbage heaps and prepare them for reuse.

Correct option is C

Option (c) BDAC is the correct order of the given sentences.
Explanation:
· B: The paragraph begins by introducing the issue of millions of workers suffering due to the global recession and not being included in official statistics, setting the stage for the discussion.
· D: The next sentence identifies who these workers are—trash pickers, sorters, and traders—clarifying the subject introduced in B.
· A: This sentence highlights the significance of their work, noting that it is unrecorded and largely unrecognized, despite being crucial in waste management.
· C: Finally, the paragraph contrasts their role in developed countries, where they are preferred for their efficiency and cost-effectiveness, completing the discussion.
This sequence (BDAC) logically introduces the workers, explains their role, acknowledges the importance of their work, and concludes with a comparison to developed countries.