Mia is a correctional officer who wants to understand the rising prison population. which group is fueling the increase seen in this chart?

The answer is "first time incarcerations for drug-related crimes".

Correctional Officers are also known as Prison officers, they are in charge of the care, authority, and control of people who have been captured and are anticipating trial while on remand or who have been indicted a wrongdoing and condemned to serve time in a jail. They are additionally in charge of the safety and security of the office itself. Most officers are utilized by the legislature of the jurisdiction in which they work, however some are utilized by privately owned businesses.