Stefanie opens a checking account at her neighborhood bank and writes a check on her account. The legal relationship between Stefanie and the bank can be described as:

a. a customer relationship.

b. a secured transaction relationship.

c. an agency relationship.

d. a sales relationship.

c. An agency relationship

Explanation:

An agency relationship is a mutual relationship, in which one person (i. e the principle) gives a permission to an agent so as to act on their behalf.

In this relationship the agent must consent to the instructions of the person i. e the principle.

Here in the question, Stefanie acting as Principal who has directed the agent (which is the bank in the given case) to execute a task.