The correct answer is option- 2. The original jurisdiction of the Supreme Court of India refers to the cases that the court can initially hear and decide upon. In this case, the original jurisdiction of the Supreme Court extends to disputes between the Government of India and one or more States.

Option-1, treaties and agreements signed by the Government of India, does not fall under the original jurisdiction of the Supreme Court. Instead, it comes under the appellate jurisdiction, where the court can review decisions made by lower courts.

Option-3, disputes relating to the implementation of the Directive Principles of State Policy, is also not within the original jurisdiction of the Supreme Court. Directive Principles of State Policy are guidelines for the government to follow, and any disputes related to their implementation would be addressed under the appellate jurisdiction.

Option-4, a bill passed by the Parliament which is violative of the Constitution, would also fall under the appellate jurisdiction of the Supreme Court. The court can review the constitutionality of laws and bills, but the original jurisdiction is limited to disputes between the government and states.

Therefore, the correct answer is option-2, disputes between the Government of India and one or more States.