The philosophical concept according to which the world has the single basis of all that exists, is called. __ Select one answer: dualism monism substantialism relativism

The correct answer is: monism.<br /><br />Monism is the philosophical concept that asserts that there is a single, fundamental substance or principle that underlies all of existence. This contrasts with dualism, which posits the existence of two fundamental substances or principles, such as mind and matter. Substantialism is a related concept that emphasizes the importance of substance as the fundamental reality, while relativism is a different philosophical position that suggests that truth and knowledge are relative to the individual or cultural perspective.