Which method of sharing data allows for real-time updates and changes?

The method of sharing data that allows for real-time updates and changes is object linking. This approach enables different components or documents to remain connected, so that when one part is updated, all linked parts can automatically reflect those updates without manual intervention. This is particularly useful in applications like spreadsheets and presentations, where you may want to draw data from various sources and ensure that any changes are instantly available across all linked documents.

In contrast, file transfer involves moving copies of files from one location to another, which does not support real-time updates; the original file remains unchanged until it is transferred again. Email attachments are static documents that, once sent, do not allow for any further updates in the recipient's version unless a new email with an updated attachment is sent. Network sharing can facilitate collaborative work, but without specific tools or features that support real-time updates, it may not inherently provide the same seamless experience as object linking.