<span>The reading style changes depending on the purpose, which relates to choice C. This happens because of the different ways of how a person understands a concept. Learning requires different means of comprehending the lessons. Thus, reading style is proportional to its purpose.</span>
I believe it would be a soliloquy. A soliloquy is defined as a person speaking to themselves without any regard for someone that may hear it (or oblivious to them).