It is a safety procedure in industries that lock dangerous machines and ensure that there is no operation until maintenance or repairs have been made.
What book is this from or...
I agree because when u have confidence , ur more strong
Some states let you retake it and give you a second chance m, if your country doesn't do that then you have higher chance to take more, every year you get to take one and it determines if you get credit or honors, you can also do community service to get you more points, that helps a lot too once you get to a higher grade you get more options and tests you can take for credits and honors, I wouldn't be that worried.:)
