"General principles of law recognized by civilized states, as a source of international law" has been applied in the following case:

Correct option is C

In the Mavrommatis Palestine Concessions case (1924), the Permanent Court of International Justice (PCIJ) applied the principle that "general principles of law recognized by civilized states" serve as a source of international law. This case involved a dispute between Greece and Britain over concession rights in Palestine, and the court upheld the application of general legal principles in international disputes, a precedent later followed by the International Court of Justice (ICJ).