Concept: The United Nations Charter lays down the purposes and principles of the United Nations. Article 1 deals with the purposes of the United Nations.
Step 1: Understand the objective mentioned in the question.
The question specifically mentions:
\[
\text{Respect for human rights and fundamental freedoms}
\]
This expression is connected with one of the purposes of the United Nations.
Step 2: Read the role of Article 1.
Article 1 of the United Nations Charter describes the main purposes of the United Nations, such as maintaining international peace and security, developing friendly relations among nations, and promoting cooperation.
Step 3: Identify the exact clause.
Article 1(3) provides that one of the purposes of the United Nations is to achieve international cooperation in promoting and encouraging respect for human rights and fundamental freedoms.
\[
\text{Human Rights + Fundamental Freedoms} \Rightarrow \text{Article 1(3)}
\]
Therefore, the correct answer is Article 1(3).