In the Mauryan Administration ‘Sannidhata’ was incharge of

The correct answer is (a) Treasury.

Sannidhata was the head of the treasury in the Mauryan administration. He was responsible for collecting taxes, storing and managing the royal treasury, and issuing coins. He was also responsible for overseeing the construction and maintenance of roads, bridges, and other public works.

The other options are incorrect.

(b) Cavalry: The head of the cavalry was called the Mahasenapati.
(c) Store House: The head of the store house was called the Gonayaka.
(d) Rural Administration: The head of the rural administration was called the Rajuka.