Concept:Foreign policy is the set of strategies a country uses to deal with other nations to achieve economic and political goals.
Explanation:West African nations need foreign investments and overseas markets for economic growth.
To attract investors, they sign trade agreements and maintain good diplomatic relations.
To access overseas markets, they join international organisations and negotiate favourable trade terms.
These actions are part of national strategy toward other countries.
Such strategy is not based on educational policy, political campaigns, or dreams.
It is clearly a matter of foreign policy.
Answer:Foreign policy (Option B).