Based on the given excerpt, the most logical answer would be C. "To respond to the counterclaim that veganism is bad for the environment."
The information cited clearly shows that the writer is against the consumption of meat. Choices A and D are more like personal attacks on those of the opposing side of the issue, which is inappropriate during an argumentative essay. Choice B is also invalid since the statistics provided don't mention anything related to an individual's personal health.
Allusion
Allusion is a figure of speech, in which an object or circumstance from unrelated context is referred to covertly or indirectly
This is best summarized by the third statement. Although the first statement originally looks like the correct answer, if you pay attention to his wording, he says that they will not reconcile while they are fighting, and that their work will become undone by quarrels. The third statement is the most correct.
Because pony boy is deciding if he made the right choice