Final answer:
When multiple documents are sent to a printer, the printer places the other document in a buffer.
Step-by-step explanation:
When multiple documents are sent to a printer, and the printer can only print one document at a time, the other document is typically placed in a buffer.
A buffer is a temporary storage area that holds data until it can be processed. In this case, the printer will process and print one document from the buffer and then move on to the next document until all the documents have been printed.