C. It is ineffective; it could be improved by asking for an explanation of how the bookmobile will be affected.
The research question is ineffective because it asks a basic yes or no question. The question is too narrow. An essay cannot be written on a yes or a no. Changing the question to ask how the bookmobile will be affected allows for much more conversation and discussion. Option B is not a good choice because the way it plans on improving the question is to ask another very narrow question. Once the date the bookmobile will stop running is given, there is nothing else to say. Option D doesn't work because it doesn't directly ask about the bookmobile at all. Option C is the best because it allows for a lot more detail about the bookmobile's future.
