I am applying for graduate masters degree program in data science. I currently already hold another masters degree in physics. but due to my below 3.00 GPA in my undergraduate physics degree, the university is asking now for me to write an academic addendum to help strengthen my application. They are asking for an executive summary containing a brief explanation and background on the situation. Their instructions suggest to not include information that are too personal like medical conditions, diagnoses or anything that would make the addendum inappropriate for admission committee review.