Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Put the sentences (a-c) in the correct order, then fill in the blank to make a logical text.

Air pollution is becoming a major concern for many countries around the world. To reduce pollution, we must take action. ___.

a. One way to do this is by using public transportation, walking or cycling.

b. This will help decrease the amount of harmful gases released into the air.

c. For example, instead of driving to work, people can take the bus or the subway.