Original jurisdiction refers to

a. the supreme courts authority to hear a case for the first time
b. the supreme courts authority to hear a case from a lower court
c. a lower courts authority to hear a case from the executive branch
d. a lower courts authority to hear a case from the legislative branch

A is correct, in part.

A Court with original jurisdiction is one, at any level, that has the right to hear a case for the first time.

The Supreme Court rarely has original jurisdiction.

the united states constitution is the supreme law of the united states. the constitution, originally comprising seven articles, delineates the national frame of government. its first three articles embody the doctrine of the separation of powers, whereby the federal government is divided into three branches: the legislative, consisting of the bicameral congress; the executive, consisting of the president; and the judicial, consisting of the supreme court and other federal courts. articles four, five and six embody concepts of federalism, describing the rights and responsibilities of state governments, the states in relationship to the federal government, and the shared process of constitutional amendment. article seven establishes the procedure subsequently used by the thirteen states to ratify it. it is regarded as the oldest written and codified national constitution in force.

well 1 they have there leader that controls them