A user has been adding data to the same spreadsheet for several years. After adding a significant amount of data, they are now unable to open the file. Which of the following should a technician do to resolve the issue?

Reverting the spreadsheet to the last restore point would only be effective if the file had previously been corrupted or if the user wanted to undo recent changes. However, if the issue is related to the physical storage of the file rather than the file's content, this option would not address the root cause of the inability to open the file.

While increasing RAM can improve overall system performance, it does not directly address issues related to file access or corruption. If the problem is due to file fragmentation or a storage drive issue, adding more RAM would not resolve the inability to open the spreadsheet.

Upgrading the network connection speed is irrelevant if the spreadsheet is stored locally and not accessed over a network. This option does not address local file access issues, which are more likely related to the storage drive's condition rather than network performance.