However, I cannot emphasize enough how much all the other houses are great too! Slyths are NOT evil, Claws are NOT stuck-up-smart , and Puffs aren't stupid and pointless as they lead you to believe they are. I have so many friends in all the houses, and we have a ball! So, answer the questions on your test truthfully.
In the book, first of all, Gryffindor is, well, the 'best' house, namely because the Golden Trio are all in it. So (this is just personally) it usually makes people feel special-er when they are in the 'best' house, because it makes them feel the best. (I don't know how that makes Gryffindor great, but I think it does in some way )