Based on the information in the graph, what new products were MOST LIKELY made from the material that the four cities recycled? A. foam and carpet padding.
B. cardboard and copier paper.
C. flowerpots and outdoor furniture.
D. road-paving materials.

the correct answer is a. how to make proposal that works.

indeed, the register is quite formal and the tone is especially objective as it avoids the use of the first and second person singular (i, you) and opts instead for the third person plural which is more impersonal and focuses on the data and the argument that is being developed by the author. the formality adds the impression of respectability to the work and the impersonality adds objectivity to it.