Choose the phrase that maintains parallel structure in the sentence below

Does anyone know the answer to the question?

When should you use encyclopedias such as wikipedia? a. never, it is not appropriate to use this source in college b. it can you get an overall understanding of the subject matter but is not considered a college-level source c. as long as wikipedia isn't the only source, it is always appropriate to use this source

Using the library or the internet as a resource, locate and watch two different live production interpretations of act iii of our town. then, compare and contrast how the two interpretations represented the original play. did either of the interpretations make any changes to the original material? if so, how did it affect your experience as a viewer? did you interpret the characters any differently after watching the live productions? why or why not?