Explanation:

- Rajuka (Option A): These were administrative officials in the Mauryan Empire responsible for justice and revenue duties in the villages.

- Yukta (Option B): Yuktas were generally associated with financial management and administration, focusing on treasury matters.

- Dharamamahamatya (Option C): This post was highly significant during Asoka's reign. These officers were tasked with spreading Asoka's Dharma, maintaining public welfare, and overseeing moral conduct.

- Prativedaka (Option D): These officials acted as messengers or reporters, reporting on public and administrative matters to higher authorities.