Suppliers can gain power from a number of sources in the buyer / supplier relationship. When a buyer has access to knowledge, information and skills desired by the supplier, this is called a(n) source of power.

This is called an expert source of power

Explanation:

An expert power is a perception or belief that an individual has some or possesses relevant expertise or special knowledge in a particular area that others do not have. In a business setting, when a buyer has access to knowledge, information and skills desired by the supplier, it is known as an expert source of power.

the assumption the narrator makes in this excerpt is that the messages he heards were going to hurt the narrator's mom; the narrator just springs in to action. the narrator doesn't specify in this excerpt why he believes that the messages present a problem that requires protection.

answer///the factor market;