Who among the following has described the medieval Indian postal system as of two kinds—the horse-post called ‘Uluq’ and the foot-post called ‘Dawa’?

Who among the following is the author of the Hastyayurveda?

Who among the following is considered to be the first law-giver of India?

Who among the following continued the Rajtarangini of Kalhana?

Who among the following was the author of the famous Sanskrit work ''Mrichchhakatika'?

In which one of the following works has Amir Khusrau praised the climate of India, its languages, notably Sanskrit, its arts and music and even its animals ?