Answer:
a. They describe the way freedom looks to oppressed people.
Explanation:
Because oppressed mean prolonged cruel or unjust treatment or control. and walls oppressions builds mean freedom.
The author of the text that contains this quote appeals to the reader's sense of logic by quoting an authority/expert on the matter. Taking into consideration that expert's opinions, in argument, are as close to a fact as you can get without actually using a fact, this shows us how your best answer here is option B.
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.
