One of the correct organizational scale for the Economic Community of West African States (ECOWAS) is Supranational.
The Economic Community of West African States can be regarded as the regional political as well as economic union.
This union consist of fifteen countries which located in West Africa and can be regarded as Supranational.
Therefore, option B is correct
Other options are:
B) Supranational
C) National
D) State
E) Local
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