The headquarter of EFTA is in_____________?

A. London
B. Geneva
C. Rome
D. Paris

European Free Trade Association Geneva, headquarter is in Geneva, Switzerland.
The European Free Trade Association (EFTA) is an intergovernmental organisation, established in 1960 by the EFTA Convention for the promotion of free trade and economic integration between its Member States (today Iceland, Liechtenstein, Norway and Switzerland), within Europe and globally.