Bug in Quiz summary Hypothesis testing for a Sample Statistic

There is a bug in Quiz summary Hypothesis testing for a Sample Statistic about the assumtion violation question.
When I took the quiz for the first time, I chose “The sample is independently and randomly sampled” and it showed the correct answer should be “The sample is normally distributed.” The explanation mentioned that it’s skewed and not noraml distribution but I don’t see it’s very obvious.
I took the quiz the second time and chose “The sample is normally distributed” for the same question and the answer is now “The sample is independently and randomly sampled”. However, the explanation still mentioned that it’s skewed and not normal distrubution.
So what’s the correct answer? Please fixed it or just remove it since the question and options are not clear. Please see screenshot as below. Thanks