Answer:
<em><u>The answer is</u></em>:<u> User account.</u>
Explanation:
a.-To use Excel Online it is necessary to have an email account of one of the Microsoft services such as Hotmail, Live or Outlook, although today all these services have been integrated under the Outlook.com platform.
b.-<u>Once you provide your email account and password</u> you should pay attention to the top horizontal bar and click on the drop-down menu that is located to the right of the Outlook.com title.
c.-<u>As soon as you click</u>, several options will be shown that will allow you to work with the new Office Online among which we find Excel Online.
d.-<u>Clicking on Excel Online</u> will open the application and display three options on the screen: New blank workbook, Browse templates and Recent Documents in OneDrive.
<em><u>The answer is</u></em>:<u> User account.</u>