The correct option is D Koya basha
The language that the Koya people primarily use is the Koya language or Koya basha. It is a member of the Dravidian family of languages. However, the Koyas can now be found living in Adilabad, Karimnagar, Warangal, and some parts of East Godavari. This set of people speak the language comparatively lesser in order to communicate better with the Telugu-speaking locals.