The correct answer is option 1, Original jurisdiction.

Original jurisdiction refers to the authority of a court to hear a case for the first time, as opposed to appellate jurisdiction which involves reviewing decisions made by lower courts. In the context of the Supreme Court, original jurisdiction allows it to directly hear and decide cases involving disputes between two or more states.

Option 2, Inherent jurisdiction, refers to the general authority that a court possesses to hear and decide cases within its jurisdiction, including both original and appellate cases. It does not specifically address disputes between states.

Option 3, Plenary jurisdiction, refers to the complete or full jurisdiction that a court possesses to hear and decide all types of cases within its jurisdiction. While the Supreme Court does have plenary jurisdiction in certain matters, this option does not specifically address disputes between states.

Option 4, Advisory jurisdiction, refers to the authority of a court to give opinions or advice on legal questions presented to it by another branch of government or a public authority. This is not the power that the Supreme Court uses to decide disputes between states.

In summary, the power of the Supreme Court to decide in the case of a dispute between two or more states is called original jurisdiction, as it allows the Court to directly hear and decide