I'm in the process of prewriting my secondaries and I'm thinking about the "explain any poor grades" question. When I was a senior in undergrad, I split my time between school and home caring for my grandfather with dementia. This caused my GPA that year to tank (like 2.8 for that year). Would mentioning this sound like an excuse? Would it raise red flags to adcoms about how I could handle disruptions to my life during med school?