Weavers Inc., a popular clothing brand, has been providing its customers with the best quality silk products for many years.The employees of Weavers Inc.use pink berry silkworms for their silk products and weave their greased silk threads in such a way that they produce different shades of colors when held at different angles.Weavers Inc.has been providing unmatched service toward millions of customers around the world.Other companies have tried to imitate their products and services, but have not been successful.Few competitors who captured these silkworms did not know the precise temperatures that were essential for their breeding and survival.Which of the following factors of inimitability does this scenario regarding Weavers Inc.best reflect?
A) Positive network externalities
B) Tacit knowledge
C) Time compression diseconomies
D) Causal ambiguity

Tacit knowledge or implicit knowledge is an opposited of the explicit knowledge. It is the knowledge in which it is very difficult to express also it is very difficult for the transfer purpose. It consist of the experience, intuition, insight, etc

So as per the given situation, it is the tacit knowledge that represent the given scenario

Hence, the option b is correct