A project manager for the quality department is trying to solve a problem with a machine that makes die cast aluminum parts that are used in automobiles. These parts are frequently made with defects. The project manager has decided to hold a meeting to discuss the process of making the parts. He creates a diagram that has branches that show the possible causes of the problems. Each of the branches breaks the cause down into more and more detail of the causes. This diagram is called a:

a. Pareto diagram.

b. Fishtank diagram.

c. Cause and effect diagram.

d. Scatter diagram.