the answer to the question is c. i hope this helps.
<span>New sources of power assist in the development of inventions since t</span>he new inventions would have been worthless without a reliable source of power energy.
Answer:
Check the network icon (or wireless connection settings) to see if you have Internet access. ...
Check for changes to proxy settings.
Check the network cables if your computer is wired to the router.
Reset your router.
Check your firewall or security software.
Hopefully this helps.