Answer:
C. USB
Explanation:
A USB Disk allows for a Backup of the PowerPoint file in case Jack needs it in the future.
Answer:
There are several reasons why your PC might not be able to connect to Wi-Fi. You should first make sure that your PC's Wi-Fi adapter hasn't been turned off, or needs to be reset. The issue might also be with the Wi-Fi, not your PC — make sure that it works on other devices.