lessons of multilateralism

Answer these three questions base on the lecture slice I upload in one page and each question for one paragragh.
1. What are the general trade-offs of international organizations for member
states?
2-Describe the general trade-offs of form, function, and fairness as they apply to one of the global organizations we have studied: the UN Security Council, UN Refugee agency, WTO, or UN Environment system (UNEP, Climate Negotiations, Global Environmental Fund, etc.).
3—Based on what you have learned in this class about international organizations and comparing Britain’s situation in the EU to the general lessons of multilateralism: should Britain leave the EU? Why or why not?