Yeah, I checked. It says I should click on "Get Help" and then click "I want to restart this excercise", and then confirm my choice. Then thing is when I reload or get back to that excercise again, all my answers are there again. So, resettng isn't working for me. I want to completely reset that course - not only that excercise or only resetting temporarily.
PS. You link refers to an article called "3 Best Arch-based User Friendly Distributions of 2015".