Teachers work hard to make sure students are learning, but sometimes students don't appreciate the teachers' hard work.
a.run-on
b.fragment
c.correct

C. Correct. Without the commas it would have been a run on. If the commas were periods they would have been fragments.

The internal conflict is that once she realizes that everything she's believed her whole life is a lie, she begins question what and who she is. In the beginning she doesn't Know what faction To choose. She also struggles to find her place and fit in