Correct option is A
(A) Article 1.1 → To maintain peace and security (III): Article 1.1 of the UN Charter outlines the main purpose of the United Nations, which is to maintain international peace and security.
(B) Article 1.2 → To develop friendly relations among nations (I): Article 1.2 stresses the goal of fostering friendly relations based on respect for the principle of equal rights and self-determination of peoples.
(C) Article 1.3 → To achieve international cooperation in solving international problems (II): Article 1.3 highlights the importance of international cooperation in addressing social, economic, cultural, or humanitarian problems.
(D) Article 1.4 → To be a centre for harmonising the actions of nations in the attainment of common ends (IV): Article 1.4 indicates that the UN should act as a forum for harmonizing the actions of nations towards common goals, such as achieving broader international cooperation.