The answer in B. "A band of angels coming after me."
The first idea that Garrett Hardin used in his essay is the idea of survival. He argues that people will do anything in order to ensure their survival even resorting to unethical decisions. The next idea is the idea of choosing not to help the poor because it will only diminish the chances of survival. The poor need more resources, multiply fast and have a high-risk factor according to Hardin.
The correct answer is C. The evidence textual offers the information to build the main idea. It also means that they are connected but they are different. The main idea has no sense without textual evidence. So, The main idea became the main idea because of the lack of textual evidence or the lack of pieces of information for that.