In case of a disagreement between the two Houses of Parliament over a non-money bill, the correct option is 3 - the President may call a joint sitting of both the Houses to consider it. A joint sitting is called when there is a deadlock between the Lok Sabha (Lower House) and the Rajya Sabha (Upper House) over the passage of a bill. The President has the authority to summon a joint sitting and preside over it. During the joint sitting, Members of Parliament from both Houses come together to deliberate and vote on the bill. If a majority of the members present and voting approve the bill, it is considered passed. This mechanism helps resolve disagreements and ensures that important bills can be passed even in situations of deadlock between the two Houses.