Final answer:
The top sheet is correctly placed on a bed with the hem-stitching facing outward, the top edge even with the bottom of the mattress, and covering any under layers like a plastic drawsheet.
Step-by-step explanation:
When making a bed, particularly in a healthcare or hospitality setting, it's essential to ensure the top sheet is placed on the bed correctly. In general, the correct placement of a top sheet is with the hem-stitching facing outward so that it can be seen when the top of the sheet is folded over. Additionally, for a properly made bed, the top sheet should be even with the bottom of the mattress, ensuring that it hangs equally on both sides of the bed. The top sheet also needs to cover any additional protective bedding underneath, like a plastic drawsheet.
In the context of the information given, if the top mattress in a large pile needs to be adjusted for a gag later, it's important to be able to lift it without disrupting the sheets. Therefore, proper placement of the sheets in preparation for the act is even more critical to maintain the illusion and comfort expected in the setting. A ladder may be required to safely reach and adjust the top mattress under these circumstances.