Answer:
C. Are my readers going to read my writing on a computer or in print?
Step-by-step explanation:
It is not relevant to ask option C. You do not need to know if your readers are going to read your writing on a computer or in print because it will have little to no effect on their reading experience.
However, if your readers do not value your topic, do not have a reason to read your topic, or are not informed about your topic will have an effect on their reading experience. All options besides C are good questions to ask.