The belief that the sole moral obligation of humankind is the improvement of human welfare.

• A. NATO
• B. European Union
• C. Humanitarianism
• D. IMF

Answer: (C)

Humanitarianism is the belief that the sole moral obligation of humankind is the improvement of human welfare. This idea centers our moral actions on alleviating suffering and promoting well-being for all people, often through aid, relief, and advocacy that cross borders. That’s why it fits the statement best. The other options point to organizations with specific roles—NATO focuses on collective security, the European Union is a political–economic union, and the IMF works to stabilize the global economy. They aren’t about a universal moral imperative to improve human welfare in the same way humanitarianism is.