Statistical process control charts are not really used to fix quality so much as they are used to. A) highlight when processes are not capable. B) point out when random variation is present. C) alert when corrective action is needed. D) monitor the quality of incoming shipments or outgoing finished goods. E) initiate team-building exercises.

The correct answer is letter "C": alert when corrective action is needed.

Explanation:

Statistical Process Control or SPC is a method useful to rate quality control as long as the object studied -called the conforming product- can be measured. The objective of SPC is to find improvement areas in the conforming product using for that purpose run and control charts. Though, SPC is not helpful while trying to fix quality issues -if any is found- with the use of those charts but to spot them only.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link :