Questions

To settle a dispute, one needs to have a sound decision-making ability to be able to judge both the sides. Also, a judge is a free body to decide upon any issue. 'Know' is a verb which means to be aware of through observation, inquiry, or information. 'Tactics' refer to an action or strategy carefully planned to achieve a specific end. A judge doesn't need tactics to make a judgment. 'Discretion' means the freedom to decide what should be done in a particular situation. 'Brains' refer to the intellectual capacity. 'Bias' means inclination or prejudice for or against one person or group, especially in a way considered to be unfair. Hence option 3 is the correct response.

International Organization for Migration Headquarters is located in Geneva, Switzerland.
The International Organization for Migration (IOM) is an intergovernmental organization that provides services and advice concerning migration to governments and migrants, including internally displaced persons, refugees, and migrant workers. In September 2016, it became a related organization of the United Nations.
It was initially established in 1951 as the Intergovernmental Committee for European Migration (ICEM) to help resettle people displaced by World War II. As of June 2018, the International Organization for Migration had 172 member states & eight observer states.