The amount of money it takes to make the item.
Answer: D. Tacit-knowledge
Explanation: The question does not indicate whether the participants were able to indicate in which direction the arrow was pointing, but in each case, if they were able to do so, they could succeed with the help of tacit knowledge.
Tacit knowledge is knowledge that cannot be written down or transmitted to someone else in the form of a skill, it means to teach someone else to know tacit knowledge, it is impossible. Tacit knowledge is gained through experience in a business and cannot be explained to someone else. It can be said that this knowledge is experienced, so it is tacitly learned and acquired, so it cannot be explained. For example, cycling is learned by getting on the bike and when you start to ride you will fall several times. The moment you started riding and you didn't fall, you learned to ride a bike, although at that moment you can't explain how.
The correct answer is Moral Philosophy.
Moral Philosophy is the branch of philosophy that ponders what is good and bad. It investigates the idea of ethical quality and inspects how individuals should experience their lives in connection to others. Moral Philosophy has three known branches. meta-ethics, normative ethics and applied ethics.