Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a cohesive and coherent exchange or text in each of the following questions from 1 to 5.

a. Consequently, these urban areas will become much more livable, significantly improving the overall quality of life for their residents.

b. Besides green spaces, many future cities will also implement advanced waste-to-energy systems to process household trash efficiently.

c. In the coming decades, major cities are expected to undergo a major transformation to become more environmentally friendly.

d. This shift toward sustainability not only helps reduce carbon emissions but also creates a healthier environment by filtering the air naturally.

e. To support this, urban planners are integrating vertical gardens and rooftop forests into the design of high-rise buildings.