The groups of Aryans who reared cattle were known as :AtribesBclansCdynastiesDcastesAnswer: A. tribes Read Explanation: Rig Vedic periodRig Veda is the earliest among the Vedas.The period of human life described in the Rig Veda is known as the Rig Vedic PeriodCattle were considered to be the most important form of wealth.Occupation-mainly cattle rearing, also engaged in agriculture.The main crop was barley.The groups of Aryans who reared cattle were known as tribes. The chieftain of each tribe was known as "Rajan" Read more in App