Final answer:
The workmanship ideal of knowledge states that c. the relevant difference is between knowledge that is true by definition (a priori) and knowledge derived from experience (a posteriori).
Step-by-step explanation:
According to the workmanship ideal of knowledge, statement c. The relevant difference is between knowledge that is true by definition versus knowledge that is derived from experience is true. This distinction aligns with the broader epistemological categorization of knowledge into a priori knowledge (true by definition) and a posteriori knowledge (derived from experience). In the context of philosophy, a priori knowledge is that which can be acquired using reason alone, and does not depend on sense experience, whereas a posteriori knowledge is that which is obtained through empirical evidence and sensory experience. This corresponds with empirical ways of knowing, as exemplified by the scientific method used in disciplines like physics.