Explanation: If you can make people understand well about the environment, then you will be able to see them concerned and eco-friendly. Making individuals know more facts about the environment and teaching them about the do's and don'ts is also important.
I would say C is most likely the correct answer because all of the other options already exist and don’t work as well as we would like them to, but if you instill values in people, it is more likely to stick with them:)
