Final answer:
Dad might not be able to attend the concert due to personal or physical limitations.
Step-by-step explanation:
Dad might not be able to attend the concert for a few reasons. In the first passage, it seems like the student's dad didn't think they would enjoy the concert or be able to handle it emotionally. In the second passage, the student mentions that their mom predicted they would get homesick if they were away from home. In the third passage, the student's father doesn't respond and doesn't seem to be conscious or alive. These reasons suggest that Dad might have personal or physical limitations that prevent him from attending the concert.