C. A private career school.
The other person was right but, they didn't give context.
A private career school, sometimes called a proprietary career school, is a type of institution that offers vocational and trade programs designed to prepare students for specific careers. These schools often provide hands-on training and practical skills and may offer programs in fields such as cosmetology, healthcare, or technology. They are typically privately owned and operated, and may not offer the same degree programs or academic focus as universities or colleges.