Many high school students interested in journalism think of journalism careers as involving glamorous international news gathering.
Conclusion (thus)
High school career counselors should tell students who are interested in journalism what life is like for a typical reporter, that is a reporter for a local newspaper.
Evidence
Many high school students thinking of a career in journalism picture glamorous international news gathering, but most journalists cover primarily local news and work for local newspapers.
Evaluate
There's seems to be a mismatch between the career that prospective journalists envision and the career that eventual journalists end up with.
High schoolers picture themselves being Anderson Cooper or some gritty war correspondent in Ukraine. Meanwhile, the vast majority of people who graduate with these journalism degrees are going to just be covering the installation of new speed bumps near the mall for their local paper.
The conclusion introduces a brand new concept of what "career counselors should do", so we want the correct answer to be a principle that would guide the behavior of career counselors.
Since the conclusion is instructing the counselors to tell students what life is like for a typical reporter, we want this principle to tell the counselor it's their job to set the student straight.
Goal
Let's look for something like,