Explanation:

Here’s the thing, let’s break down what each article actually covers:

- Article 55 ?? — This lays out how the President gets elected. It spells out the proportional representation system and who votes.

- Article 51 — Talks about promoting international peace and security. It has nothing to do with the President’s election.

- Article 61 — Deals with the impeachment (removal) of the President, not the election.

- Article 65 — Explains who acts as President if there’s a vacancy—like the Vice-President’s role.

So, the answer is Option 3: Article 55.