The norms are cultural rules, which arise with the reward and punishment system and affect the individuals’ behaviours. All cultures, subcultures and groups have distinctive and specific norms that direct correct behaviours. The acts and laws, rules about clothing, games and sports, etc. all reflect social norms. The rules are required for a society. There will be chaos in a society, where norms do not exist. The norm is a system of rules with sanctions. The correct answer is B.