The answer is A: Page break view.
B or C are options that will help her view data separately. However, these two options will not be available once your workbook is Printed. Anytime you are working with huge data, it can sometimes be difficult to compare data in your worksheet. And that is why Excel has a number of tools that can make it easier to view content from various parts of your work book concurrently even after printing. Page break view will manually insert dividers that will break a worksheet into several pages for printing.
