I had a "bad grade" in a class in my 4th year of undegraduate studies. The problem is that this class is crucial for the graduate program I intend to pursue. The class was Propagation of signals in media. I got a 91%, which I know is a really good grade, but I hoped to get more, since I want to do masters in Photonics or Electromagnetics. I think that the reason why I got this grade is that one family member passed away a week before my exam, and honestly I didn't have the energy or the will to study at that moment. Do you think that this grade can influence my graduate admission chances? Since up to that point I had excellent grades, and to this day I have a 95% GPA, I was aiming for selective universities.