As a result of the hundred years’ war, the use of feudal knights was; a) discontinued due to their failure in the war b) continued only in practice, and the reason for many civil wars across western europe c) the training of many future kings d) the model for future troops

B) Continued only in practice, and the reason for many civil wars across Western Europe

Explanation:

The Hundred Years War was an armed conflict between England and France between 1337 and 1453. They were a series of military and diplomatic clashes characterized by stages of war campaigns alternated by truces. Although it influenced the development of the Modern State, in England the real power was limited, but the supremacy of the aristocracy and the nobility continued. The organization of the army and the war had developed, but it continued to use more traditional methods than the French.