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. Planting trees is another effective measure, as it lowers carbon dioxide in the atmosphere and enhances air quality.
b. Small steps like cutting down on plastic use, practicing recycling, and using water wisely can have a meaningful impact.
c. In conclusion, achieving these objectives requires the joint efforts of individuals, organizations, and governments to conserve resources, minimize pollution, and tackle climate change for the benefit of future generations.
d. Ensuring a sustainable and healthy future depends on our efforts to protect the environment.
e. Furthermore, opting for environmentally friendly products and embracing renewable energy sources, such as solar and wind power, plays a vital role in creating a greener planet.