The belief system where men dominate is known as patriarchy. In the context of the traditional role of women in Japan being dependent on a system where men hold power, the correct term that describes this belief is "patriarchal" (option C).
Patriarchy is a social system where males hold primary power and dominate in roles of political leadership, moral authority, social privilege, and control of property. In a patriarchal society, men often have more opportunities, rights, and advantages compared to women.
In the case of Japan, historically, there has been a strong emphasis on male dominance in various aspects of society, including politics, business, and family structures. This has influenced the traditional roles and expectations placed on women within Japanese culture.
Therefore, the belief system described in the question aligns with the concept of patriarchy.