Final answer:
The function that is not a part of the Control Plan is to control the process of identifying significant characteristics, which occurs before a Control Plan is implemented.
Step-by-step explanation:
The option that is NOT a function of the Control Plan is C) Control the process of identifying significant characteristics. A Control Plan is a document that outlines the practices and procedures to be used during a process to ensure that products meet the quality requirements. It typically includes documentation of the characteristics that must be controlled, how they are to be measured, who is responsible for measuring them, and the location of relevant control charts.
Option C does not describe a function of the Control Plan because controlling the process of identifying significant characteristics is part of the planning phase, which occurs before a Control Plan is implemented. The Control Plan is used for ongoing monitoring and control, not necessarily the initial identification process.