Indian judiciary (High Courts): Guwahati/Gauhati High Court — identify its territorial judicature. Consider the current jurisdictions served by its principal seat and benches. Choose the correct grouping of states under its jurisdiction.

Given data

• Court: Gauhati (Guwahati) High Court.
• Task: Identify the states under its jurisdiction.

Concept/Approach
Following reorganizations in the North-East, the Gauhati High Court currently exercises jurisdiction over Assam, Nagaland, Mizoram, and Arunachal Pradesh via its principal seat and permanent benches.

Common pitfalls
Including Meghalaya, Manipur, or Tripura (they have separate High Courts since 2013).

Final Answer
Assam, Nagaland, Mizoram, and Arunachal Pradesh