Final answer:
Plato argues for a society where each individual is confined to one trade to ensure efficiency and skill, while More allows for greater individual choice in trades. Plato's ideal society is governed by philosopher-kings who align roles with natural aptitudes to achieve social harmony.
Step-by-step explanation:
The statement that best compares Plato's and More's arguments is that Plato claims that each person can master only one trade, while More believes people should have more choices. In Plato's The Republic, he discusses the structure of an ideal society where each person is to perform the role for which they are naturally suited, without engaging in multiple professions, as this would compromise their proficiency and the efficiency of the state. On the other hand, More's society, as described in Utopia, allows for greater individual choice and the possibility of changing one's trade, reflecting a differing view on personal freedom and social organization.
Plato's work implies that a just and successful society is one where individuals contribute to the common good through the role that best aligns with their abilities. In his ideal society, philosopher-kings would govern, as they possess the wisdom and knowledge to rule effectively. This meritocratic approach is founded upon the idea that justice exists both in the individual and the society, with each person working harmoniously within their designated role to create an internally harmonious society.