How do I take a screenshot?

For technical issues, an agent may request a screenshot to investigate a particular bug. Please provide a full-screenshot and do not crop out any parts of the page. 

Chromebook: https://teachmehelp.zendesk.com/hc/en-us/articles/360056049114-How-to-take-a-screenshot-Chromebook 
PC: https://teachmehelp.zendesk.com/hc/en-us/articles/360056049134-How-to-take-screenshot-PC 

Macintosh: https://teachmehelp.zendesk.com/hc/en-us/articles/360056173554-How-to-take-a-screenshot-Macintosh 

Tablet/Mobile: https://teachmehelp.zendesk.com/hc/en-us/articles/360056387914-How-to-take-a-screenshot-Tablet-Mobile