A) .txt
B) .exe
C) .doc
D) .ppt
🧠 Explanation:
The “.doc” file type indicates a Word document, used for text files in Microsoft Word. This extension is a key topic in computer literacy, engaging students and office workers. Understanding file types ensures proper document handling, relevant for managing digital files in academic or professional settings. The .doc format’s widespread use highlights its role in document creation, attracting those learning software tools and their applications in business, education, and personal productivity for efficient file management.