Explanation:

The correct answer is 'E.'
• The correct sequence of the segments after rearrangement is BDAEC.
• The sentence 'B' is independent of any other sentence as it is giving general information about "rising pollution". Hence, 'B' is the first part.
• Sentence D will come after B as it is telling about the effects of rising pollution.
• Sentence A will come after D as it is giving information about different ways in which pollution enters the human body.
• Sentence E will come after A as it is saying pollution not only affects humans but also our environment.
• The sentence 'C' is the concluding part because it is telling rising pollution is a big problem.
• From the above sequence, we can say that sentence 'E' is the fourth sentence after rearrangement.

Hence, the correct answer is option 5.

Paragraph after rearranging the sentences:

Rising pollution is a very big problem for us. It is producing health challenges for all. We breathe polluted air, drink polluted water and eat polluted food. Pollution produces many health challenges not only for all creatures but also for our environment. The question is rising how can we protect ourselves from this enemy.