The correct option is A Geneva (Switzerland)
The World Trade Organisation is an intergovernmental organisation that regulates international trade. It deals with the rules of trade between nations. At its heart are the WTO agreements, negotiated and signed by the bulk of the world's trading nations and ratified in their parliaments. The goal is to help producers of goods and services, exporters, and importers conduct their business. The headquarters of the World Trade Organisation is in Geneva, Switzerland.