1. Article 110
2. Article 105
3. Article 108
4. Article 112
The correct answer is Option 2. Article 108
Article 108 of the Constitution of India talks about joint sitting of both houses in certain cases.
Article 30 says the Joint Sitting of both houses can be called by the President of India and is chaired by Lok sabha speaker or deputy speaker of Lok sabha or deputy speaker of Rajya Sabha.