Reservation of seats in Panchayat election for Scheduled Castes shall not apply to the State.

The answer is C, Arunachal Pradesh, though this one needs care. Part IX (Panchayats) of the Constitution does not apply to Scheduled Areas and tribal areas under Article 244 (Article 243M). Parliament has also kept Nagaland, Meghalaya and Mizoram outside Part IX, and Hill areas of Manipur with a District Council are excluded too.

• Uttar Pradesh, Haryana: Part IX fully applies. Article 243D mandates SC seats in proportion to population.
• Assam: Part IX applies to non-tribal areas. Only the Sixth Schedule areas (BTC and other autonomous districts) are excluded, so SC reservation still operates in the State.
• Arunachal Pradesh: The question is designed around the State's demographic profile. Scheduled Tribes form the vast majority, and the SC population is negligible, so Article 243D reservation for SCs is practically nil in its panchayats.

The core concept is the territorial scope of Part IX and the difference between 'excluded areas' and 'no SC population'. This links to the Mains theme of federal design and tribal self-governance under the Fifth and Sixth Schedules. Verify the current text of the Arunachal Pradesh Panchayati Raj Act before relying on this in any other context.

Trap: Students confuse Sixth Schedule exclusion with the whole State. Assam is only partly excluded, so it does not fit the question.