The correct answer is A. Samurai
Step-by-step explanation:
In Medieval Europe from the 5th to 14th century, Knights were armored men whose main purpose was to defend and protect the King or the Lords. Because of this, Knights were considered par to nobility and were the main military force in Medieval as they were the soldiers in charge of protecting societies, also, knights acted according to a chivalry and honor code. In the case of Japan that was an Asiatic country and therefore the structure of its society differ from the one in Europe, the ones in charge of protecting the society and the emperor, who similarly to the King was the most important authority were the Samurai. Indeed, similarly to knights the Samurai wore armor, created military strategies and acted following an honor code. Therefore, the Japanese figure whose role was similar to the figure of the Knight was the Samurai.