The correct answer is C) Readers can use them to obtain summary information quickly.
A reader might find tables, charts, or graphs useful in that it can use them to obtain summary information quickly.
When writing a paper or a document, if the information is complex or you want to make it clear for the reader, it is a good idea to use tables, charts, or graphics because they help present the information in a visual manner. In the case of numbers or statistic, it is necessary to present the results in circle graphics or any table or charts that display the numbers, tendencies or percentages. And it is easier for the reader to locate any piece of information in particular.