Explanation:
The main reason why is because regular users don't have permission to write to /etc. Assuming this is Linux, it is a multi-user operating system. Meaning if there are user-application configuration files within /etc, it would prevent users from being able to customize their applications.
The answer is a because that is what is supported
Answer:
developer tool
Explanation:
if you're using chrome click on the 3 dots that's in the top right corner and go to tools, you will see "developer tools" and click on that, then you will see an icon that shows a laptop/computer and an iphone click on that and you can even choose the type of phone you wish to see the view of (ex. iphone X), refresh the page and you will be able to see the direct message icon and you will be able to message your friend.
good luck.
Identify, gather information, identify any alternatives, weigh the evidence, choose among alternatives, take action, review you decision