Columns in Excel are labeled with:

In spreadsheet applications like Excel, the worksheet is structured as a grid to organize data efficiently. To uniquely identify each cell, a coordinate system is used, where columns and rows are labeled distinctly. This labeling system is fundamental for creating cell references in formulas and navigating the worksheet.

• B: Letters is the correct answer. Columns in Excel are labeled alphabetically (A, B, C, ..., Z, AA, AB, etc.) across the top of the worksheet. This convention allows for easy identification and referencing of vertical data sets.
• A: Numbers are used to label rows, not columns.
• C: Symbols are not used for labeling columns in standard spreadsheet software.
• D: Both letters and numbers combine to form a cell address (e.g., A1), but columns themselves are labeled solely with letters.