Concept:The financial headquarters of ECOWAS refers to the seat of its regional development bank.
Explanation:ECOWAS operates its main administrative secretariat in Abuja, Nigeria.
Its financial institution, formerly known as the Fund for Cooperation, Compensation and Development, is based in Lomé, Togo.
This institution functions as the central bank and development finance arm of ECOWAS.
Hence, the financial headquarters is located in Lomé, not in Banjul, Lagos, or Cotonou.
Answer:A. Lome