Action that begins with a verbal warning, and then proceeds through written reprimands, suspension, and finally, in the most serious cases, dismissal, is:

The correct answers is - c. progressive discipline.

Explanation:

Progressive discipline is a form of discipline in which penalty for committing an offence increases in severity with each repeated instance of the same offence. For example, if a company prohibits alcohol consumption on a workplace, an employee will receive a verbal warning for doing it for the first time. After the next time, he or she will receive a written reprimand and so on and so force.

This type of discipline is used in many other environments, like pedestrian road-crossing violations, and aims to change individuals behavior instead of just punishing them.