MS Word is used for:

MS Word is a powerful word processing application, making its primary use the creation and editing of documents. It provides extensive tools for formatting text, inserting images, creating tables, and managing page layouts, making it ideal for producing letters, reports, essays, resumes, and various other text-based files. Its robust features cater specifically to document production.

• Calculations is incorrect because spreadsheet software like Microsoft Excel is specifically designed for numerical computations, data analysis, and creating charts.
• Presentations is incorrect as presentation software, such as Microsoft PowerPoint, is used to create slide shows with text, images, and multimedia for delivering information visually.
• Programming is incorrect because programming involves writing code using specialized text editors or Integrated Development Environments (IDEs) that support various programming languages, not a word processor like MS Word.