The correct answer is A. True
Step-by-step explanation:
Class conflict refers to a struggle between different social classes. This type of conflict exists in most societies; additionally, according to theorists such as Karl Marx class conflict leads to revolution and therefore transforms society. For example, during the Industrial Revolution, the bourgeois emerge which was a new social class.
Class conflict is part of modern industrial societies, especially conflict between the owners of important industries and workers who belong to middle or low social classes. However, this conflict has not resulted in a revolution that changes the capitalist model but only in an indirect non-violent struggle or conflict between different classes. Thus, it is true in most modern industrial societies class conflict has not resulted in revolution.