As the manager of the production department where electrical circuits are being made you observe the inspection station where the completed printed circuit assemblies are being inspected. In this operation the inspector takes the printed circuit assembly and puts it into a fixture. The fixture is part of a testing machine that has three digital readouts. The inspector records the readings on the three digital readouts on his inspection report. This is an example of:

a. Attribute inspection.

b. Variable inspection.

c. Sampling inspection.

d. Process control.