Juan's girlfriend broke up with him about a month ago. shortly after that, his grades began to suffer. recently he noticed that his times at the track meets are getting slower. what is the most likely cause of this change in juan's grades and running times? juan is sad about the break-up and it's causing his grades and his running to suffer. juan studied more because he had a girlfriend who encouraged him to do well in school. juan is having a hard time focusing on his school work because he isn't doing well in track. juan no longer enjoys school or track and so he isn't trying as hard as he was before.