<span>Do one of the following
To insert a single column, select the column or a cell in the column immediately to the right of where you want to insert the new column. ...
Do one of the following: Right-click the selected cells and then click Insert.</span>
From Google:
"User Account Control<span> or </span>UAC<span> for short is a security feature of Windows which helps prevent unauthorized changes to the operating system. These changes can be initiated by applications, users, viruses or other forms of malware."</span>
True, personalization is definitely part of this.
It would be False, because if you were to mess up it can result in something going bad.
