Final answer:
A flowchart would be the best choice for producing a graphic that depicts the process of handling customer service complaints.
Step-by-step explanation:
A flowchart would be the best choice for producing a graphic that depicts the process of handling customer service complaints. Flowcharts are ideal for illustrating step-by-step processes, making them perfect for showing the various stages involved in handling complaints. They use different shapes and arrows to represent different actions and decisions, which can help employees understand the flow of the process.