Which of the following shortcuts opens the Font dialog box?

The shortcut that opens the Font dialog box is Ctrl+D. This command provides quick access to the Font dialog, where users can change various text attributes such as font style, size, color, and effects like bold, italic, or underline. This is particularly useful for formatting documents efficiently without having to navigate through multiple menu options.

The other shortcuts serve different functions: Ctrl+F is used to open the Find dialog, allowing users to search for specific text within a document. Ctrl+G typically opens the Go To dialog, used for navigating to a specific section within the document, while Ctrl+H opens the Replace dialog for modifying text throughout the document. Understanding these differences helps users maximize their productivity when working in word processing software.