Answer:
B) drop-down arrow, Themes
Step-by-step explanation:
An Excel theme consists of a collection of colors, fonts, and effects that can be applied to a slide to add beauty. Themes make work to be professional, consistent and make adhering to design guidelines easy.
To change theme color, first open a Blank Workbook. Secondly, On the Page Layout tab, in the Themes group, click Themes drop down arrow beside the color button.