Answer : 2. "बुर्किना फासो, माली और नाइजर"
Explanation :

Recently Mali, Niger and Burkina Faso announced their withdrawal from the Economic Community of West African States (ECOWAS). The three countries accused ECOWAS of imposing “illegitimate, inhumane and irresponsible” sanctions against them after their forces seized power in a recent coup. Border restrictions limiting movement and trade have harmed countries' economies. The withdrawal of the three countries could weaken the regional grouping and increase tensions.