The author uses the following passage (paragraph 7) mostly to show Unlike community colleges, which offer a wide variety of courses and room to change and explore, trade schools won't let you have a do over. If you began a nursing program and then decided you wanted to be a lab technician, you would have to start all over again. You should also keep in mind that preferred skills and school standings change rapidly. A. that students who attend technical Schools are likely to encounter setbacks B. that there is some risk involved in attending a trade school C. that she doesn't think attending trade schools is a good idea D. that students don't need to sure about what they want to study when they attend a trade school.