Explanation:

Let’s break this down, option by option:

- Article 66

- This article covers how the Vice-President of India is elected.

- Both Houses of Parliament (Lok Sabha and Rajya Sabha) vote in an electoral college.

- It’s the key article for this question.

- Article 68

- This is about how a vacancy in the Vice-President’s office should be filled, not about the actual election.

- Article 62

- This deals with the timing of presidential elections, not the Vice-President.

- Article 64

- This states that the Vice-President is also the ex-officio Chairman of the Rajya Sabha.

So, you nailed it—Article 66 is the correct answer. Good grasp of the Constitution!