The best way to get started in Excel 2007 is to click the..........

Microsoft Office Button

The correct answer is option 3- Microsoft Office Button.

In Excel 2007, the Microsoft Office Button (located in the top-left corner) is the starting point for many essential tasks, such as Opening a new or existing workbook, Saving or printing a file, Accessing Excel options and settings. It's the main entry point for file-related operations in Excel 2007.