Correct Answer:
C. 16,384
In Excel 2007 and later versions, the number of columns available on a single worksheet significantly increased to 16,384. These columns are labeled from A to XFD, with XFD being the last column.
- 256 was the maximum number of columns in older Excel versions (Excel 2003 and earlier), making it incorrect for Excel 2007+.
- 65,536 was the maximum number of rows in Excel 2003 and earlier, not columns.
- 1,048,576 is the maximum number of rows in Excel 2007 and later, not columns. Understanding these dimensions is crucial for managing large datasets in modern Excel.