The doctrine that asserts the limited capabilities of man in the knowledge of the world is called: a) materialism; b) skepticism; c) empiricism; d) idealism; e) rationalism.

The correct answer is b) skepticism.<br /><br />Skepticism is the philosophical doctrine that asserts the limited capabilities of man in the knowledge of the world. Skeptics argue that it is impossible to attain certain knowledge or that our beliefs and judgments are inherently unreliable. They question the possibility of absolute truth and emphasize the provisional nature of human knowledge.<br /><br />Materialism, on the other hand, is the belief that only physical matter exists and that all phenomena, including consciousness, can be explained in terms of physical interactions. Empiricism is the theory that knowledge comes primarily from sensory experience. Idealism is the belief that reality is mentally constructed or immaterial. Rationalism is the theory that reason rather than experience is the foundation of certainty in knowledge.