What may be thought of as one time pass, ended up repeating and retaking the test. what are the reasons?

You may not be satisfied with what you got on that test. If it’s a one time pass you can either take the test or not take the test, for either the better or the worst. Life isn’t full of retakes, so do your best the first time- that way you don’t have to repeat it or retake. You can be confident in your first attempt!

:)