Answer:
Well, your friend could just be really bad at paying attention in class and blaming it on ADHD. Or, maybe she just wants an excuse for zoning out during long lectures. Either way, if she's not experiencing any other symptoms, it's probably safe to say that she doesn't have ADHD. However, if she's adamant about her self-diagnosis, maybe suggest that she talk to a professional and get an official diagnosis. Who knows, maybe she'll be pleasantly surprised and find out that she doesn't have it after all!
Step-by-step explanation: