This is a chance to remember that "agency" is something that a broker and a client decide on together. It has nothing to do with being part of a "trade group" or "union".
These are questions that the above text answers:
1. What is the role of a real estate agent?
2. Who makes the decision regarding agency in real estate?
4. What does agency refer to in the context of real estate?
5. What factors are involved in deciding agency in real estate?