In Excel, what does the fill handle allow you to do?

The fill handle in Excel is a versatile tool that enables you to extend data patterns across a range of adjacent cells efficiently. When you click and drag the fill handle (a small square at the bottom-right corner of the selected cell or range of cells), Excel can automatically fill cells with a sequence or replicate existing content based on the pattern identified. For example, if you have a series of numbers, dates, or text, the fill handle can recognize the sequence and continue it in the adjacent cells. This functionality significantly enhances productivity by streamlining the process of entering repetitive or sequential data without the need for manual input.

The other options represent functionalities that are not related to the primary purpose of the fill handle, such as resizing the worksheet window, changing cell formatting, or deleting rows.