Final answer:
Discord is a state of disharmony which is synonymous with conflict, best representing option c) Conflict. It is the antithesis to collaboration, consensus, and cooperation.
Step-by-step explanation:
Discord refers to a state of disharmony, open or prolonged fighting, strife, or friction. In the context of collective dilemmas, one of the main causes is when participants disagree due to opposing preferences, which can result in a situation with no compromise that satisfies all parties. An example of this would be a political party divide on a contentious issue like the death penalty, where the decision is strictly binary: it will either be permitted or prohibited.
Therefore, the answer to the question is c) Conflict. Discord is closely associated with conflict, which represents any serious disagreement or argument, typically a protracted one. In contrast, collaboration, consensus, and cooperation denote various forms of working together and are antonyms to discord.