Waec Model Questions Vol1 2021 Civic Education Question 36

In a town three ethnic groups A, B and C are in conflict over a piece of land. Their mutual trust scores (on a scale of 0‑10) are: AB = 6, BC = 4, CA = 5. Three conflict‑resolution mechanisms are available: - Negotiation (requires the average trust of the two parties involved to be greater than 5; cost = 2 units) - Mediation (requires the average trust of all three groups to be greater than 6; cost = 3 units) - Arbitration (requires the average trust of all three groups to be greater than 7; cost = 5 units) The community has a budget of 8 units and wishes to adopt a mechanism that satisfies the trust requirement, stays within budget and involves the greatest possible number of groups. Which mechanism should be chosen and which parties (if any) will directly participate?