What is most likely the reason the writer uses a problem solution text structure in this passage?

The animal shelter on West End Avenue is located next door to the Pinetown Library. The town has been receiving an average of six complaint calls each day because people are upset about the noise of barking dogs coming from the animal shelter. Mayor Jennings has decided to put up a wall between the two buildings. The wall will be made of a material that reduces noise by 50%. However, if the wall does not reduce the amount of noise, the shelter may have to be moved to a new location.

A. to force one of the two organizations to move.
B. to explain that the town has been receiving complaints
C. to inform people that the mayor is aware of the problem
D. to show that the problem of noise from the animal shelter is being resolved ​