To apply a Drop Shadow Quick Style to a visual element, which tab do you use?

To apply a Drop Shadow Quick Style to a visual element, the Format Ribbon Tab is the correct choice because this tab specifically houses tools and options for altering the appearance of selected shapes, pictures, charts, and other graphic elements in your document. The Format Tab contains various stylistic options, including effects like shadows, outlines, and fills, which allows for detailed customization of visual elements.

When you select a visual element, the Format Ribbon Tab gives you access to enhance its aesthetics in a way that complements its function in the document. Options like Drop Shadow are found within the "Shape Effects" or "Picture Effects" menus found in this tab, providing users with quick and easy access to rich formatting tools specifically geared towards visual enhancements.

Other tabs, such as the Design, Home, and Insert tabs, focus on more general formatting or insertion of elements rather than the detailed formatting of visual parts, which is why they wouldn't lead to applying a Drop Shadow Quick Style as effectively as the Format Ribbon Tab does.