I believe the answer is b. However I'm not quite sure. I think b would be the most reasonable answer.
B. because it is only used by the military and not the public
<u>Explanation</u>:
A trade school is becoming popular this because it serves as a home to acquire technical education.
Thus anyone who wants to learn a skill having no prior experience is a best fit for trade school. A major benefit of the trade school is that it provides practical lessons to students, often times they are grouped together in peers for projects which encourages group learning.
