Answer:
They omitted the cost to promote possible environmental recovery techniques.
Explanation:
As we can see from the question above, a community assessed the availability and many resources needed to generate electricity from the development of a renewable energy source. Although the resources evaluated are, in fact, necessary for the development of this source, the community failed to assess a possible environmental impact that this energy production can cause, because even though it is a renewable energy, it can use environmental resources that can generate a certain impact. Therefore, the community decided to assess the costs necessary to implement environmental recovery techniques, if necessary.