Which of the following facilitates settlement for sub-regional indebtedness?

The correct option is: The West African Clearing House. The West African Clearing House (WACH) was established by the Economic Community of West African States (ECOWAS) in 1989 to facilitate the settlement of sub-regional indebtedness. WACH serves as a mechanism for clearing and settling multilateral payments among member countries in their respective currencies. The organization aims to promote trade and investment within the region by providing a secure and efficient system for settling cross-border payments, which reduces the cost and risk of transactions. Therefore, the West African Clearing House is the option that facilitates settlement for sub-regional indebtedness.