Correct Option: D

Aristotle was a Greek philosopher and polymath, a student of Plato and teacher of Alexander the Great. Together with Plato and Socrates (Plato’s teacher), Aristotle is one of the most important founding figures in Western philosophy. Aristotle’s writings were the first to create a comprehensive system of Western philosophy, encompassing morality, aesthetics, logic, science, politics, and metaphysics. Aristotle was invited by Philip II of Macedon to become the tutor to his son Alexander in 343 BC. Aristotle was appointed as the head of the royal academy of Macedon. During that time he gave lessons not only to Alexander, but also to two other future kings: Ptolemy and Cassander. Aristotle encouraged Alexander toward eastern conquest.