The correct answer is Hard working bullocks. The cattle are mainly classified into milch and draught. The milch are the variety which has greater milk production. While draughts are involved in hard labour on agricultural fields. They are involved in the activity like irrigation, carting. The bullocks of the drought breeds are excellent drought animals. The main drought breeds in India are Hallikar, Amritmahal, Khillari, Nagori, Malvi.