A. Workbook
B. Worksheet
C. Cell
D. Document
🧠 Explanation:
- In **MS Excel**, the primary file is called a **Workbook**, which contains one or more **Worksheets**.
- Each **Worksheet** is made up of **Cells**, which are the individual boxes where data is entered.
- While "Document" is a term used in applications like MS Word, it is **not** a specific term or nomenclature used in Excel.
- Understanding correct Excel terminology helps in navigating and using the software efficiently, especially in data handling tasks.