Sustainable development of a society means that resources are used wisely enough and will still be present for the use of the future generation. If choice A is correct, people would have the power to exploit resources as long as they have money. If choice B is correct, a country would be able to sustain itself in the expense of another country, which is morally wrong. If choice D is correct, then people in the future would only have artificial resources in their hands which would create a lot of problems in regards health, economy, etc. Therefore, all these three choices are wrong.
A society is consired sustainable if it (c) recognizes the limits of the environment and looks for alternatives to using up natural resources.
D. Students. It would affect the student body the most, and I doubt teachers would like to or need to "take a stand on what you wear". Hope this helps :)
Yes, it's a word for an emotional relationship between to people.