Explanation:

- The President of India (Option 1) does not preside over the joint sitting of the Parliament. The President summons the session but does not preside over it.

- The Speaker of the Lok Sabha (Option 2) presides over the joint sitting of the Parliament. This individual is responsible for maintaining order and ensuring the smooth conduct of the session.

- The Chairman of the Rajya Sabha (Option 3) does not preside over the joint sitting because their role is primarily limited to the functions of the Rajya Sabha.

- Option 4, "None of the above," is incorrect because the Speaker of the Lok Sabha fulfills this role.