The difference between an universal theme and a common theme is that an universal theme can be implemented or used by anyone and a common theme is a message of a passage.
Hope this helps!
A commemorative speech has to do with celebrating something or someone. If you want to pay tribute to someone (and there isn't a specific topic you have to talk about), you should talk about someone important to you, someone whom you love and who inspires you - it could be a family member or a friend, or someone you look up to.
I've never read "Charles" but I would say it would be
C) <span>Laurie's teacher, who prides herself on being calm, loses her temper.</span>