Hey! I hope your having a good night! So a isn’t really saying he’s having a good time. It’s just saying that he hasn’t been bullied and that the teacher is okay. It’s definitely not b because that entire sentence is very negative. C is a great option. Friends are a really good thing and it didn’t outright say it brought him joy to make some friends but who doesn’t get happier when they make some friends right? It could also be d. Because that’s reinforcing how great the friend is. And how nice she is for helping him with his studies. And it’s not E because that’s also extremely negative. All in all, I think c and d are great answers because everyone enjoys life a little more with some friends.
Option F would be the best answer, personal narratives should be concluded with with an outcome of the experience and a reflection on what you've learned.