I personally wouldn’t write the addendum for your GPA unless something significant happened in your life. Unfortunately I don’t think saying that online school wasn’t a good fit for you or that working while doing your degree caused your GPA is good enough for an addendum. About 40% of full time students work while doing their degree.

I came to the comments to see if anyone got the answer wrong simply because they were treating it as a MSS question and not a MP question and see that's what happened for a lot of people. Whether it is MSS or not, as there seems to be some debate in the comments, wouldn't it make the most sense to explicitly say that some MSS questions may read as MP's and to answer them as such? Or would that further confuse people? I specifically refused to answer B even though I clearly saw that it was the conclusion because I kept thinking that it should be a different answer if it was a MSS question.