Question

the process by which nations carry on political relations with one another and resolve conflicts by peaceful means is referred to as
military intervention
diplomacy
economic aid
political realism

Explanation:

Diplomacy is the practice of managing international relations, which includes carrying on political relations and resolving conflicts peacefully. Military intervention involves the use of military force. Economic aid is financial assistance. Political realism is a theory about power - based international relations.

Answer:

B. diplomacy