Final answer:
To move or copy a worksheet in Excel, you can access the 'Move or Copy' menu by right-clicking on the worksheet tab at the bottom of the Excel window.
Step-by-step explanation:
The drop-down arrow used to move or copy a worksheet is located in the 'Move or Copy' menu, which can be accessed by right-clicking on the worksheet tab at the bottom of the Excel window. Once you right-click on the tab, a list of options will appear, and you can select 'Move or Copy' from that list.
After selecting 'Move or Copy', a dialog box will appear. You can then choose the location where you want to move or copy the worksheet to, such as another workbook. You can also choose whether you want to create a copy of the worksheet or move it to a new location.
It's important to note that the specific steps may vary slightly depending on the version of Excel you are using, but the general process is the same. The key is to access the 'Move or Copy' menu from the worksheet tab.