Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.

a. Although the population has increased, public transportation hasn’t improved much.
b. The city has grown rapidly in the last decade.
c. New shopping centers, apartments, and parks have been built.
d. Actually, traffic congestion has also become a serious problem.
e. This is due to the lack of infrastructure to handle the growing number of residents.