Based on my prior knowledge of the word I would say C (unoriginal) is a pretty safe choice.
Most people call her a level-headed student. That would be the correct answer, because level-headed is always hyphenated.
Which best analyzes the quality of the evidence's support for the claim that the funding for the public library should be protected because the library offers important programs and services that benefit the whole community?
D. The quality is okay; the evidence supports the idea that the library offers programs, but it would be better if the writer had asked these people what specific programs they attended.
Hope this answers your question!