Answer:
D. all of the above are correct.
Step-by-step explanation:
International ethics comes under the domain of international relations which concerns with the ethical conduct of relations between countries and states. It normally looks into issues which may arise during the process of states' external exchange and relations.
International organisations and other supranational powers try to secure ethical conduct of international relations among nations by establishing international laws. These laws ensure a just and liberal conducts of transactions and relations among nations.
International ethics focus on ending corruption through ethical principles. It protects exploitation of labors both migrant and domestic. It also focuses on environmental concerns and tries to ensure a safe environmental impact.