Explanation:

- Option 1: Village-level administration

- Incorrect. These officers were not primarily concerned with village-level governance.

- Option 2: District-level administration

- Correct. Ashokan inscriptions indicate that 'Pradeshika', 'Rajuka', and 'Yukta' were officers involved in district-level administration, dealing with local governance and administration.

- Option 3: Provincial administration

- Incorrect. While they reported to provincial authorities, their main role was at the district level.

- Option 4: Level of the central administration

- Incorrect. These officers were not directly part of the central administration.

- Correct Answer: Option 2, District-level administration