i have been doing school work for nearly 24 hours, this is my last class i have to do, please im desperate for right answers im very tired, this is 100 points please just help me

Why did the belgian parliament pass laws to decentralize its government? a. to increase trade with neighboring luxembourg b. to decrease the political power enjoyed by the flemish c. to enable belgium to join the european union d. to reduce tensions between belgium's two main ethnic groups