Answer:
C) They taught artistic skills to laypeople
Step-by-step explanation:
The answer is, C) They taught artistic skills to laypeople, we know this is the answer because, well, teaching is a form of contributing to learning. And, monks were pretty good at it. Another reason why we know C is the answer, is because teaching was one of the few ways that monks could contribute to learning since they were not allowed to hold public office or engage in business.