Answer: OPTION C
Explanation: A trade-off (or trade-off) is a decision of a situation involving a decrease or loss of one quality, volume or assets of a set or layout in return for profits in other respects.
Simply put, a trade off is where one thing is increasing and another has to be diminishing.Thus, we can conclude that the given case depicts trade off as if the society wants to enjoy a clearer and safe environment they have to forego some of their incomes.