A. The girls of Salem begin accusing people of witchcraft.
They are both considered metaphors, yes. The light of my life means the happiest thing that you have ever known. It's kind of an exaggeration, but it's metaphor. Roller coaster of emotions means that your mood swings up and down and all around like a roller coaster. I hope this helps you!
A. Repetition of the word lazy makes the tone angry.
When repetition is used as a literary element, it is done so for the sake of emphasizing something. When the word “lazy” is spoken by the Eldest Magician in the story, it is out of anger at that the man was complaining that he would have to row home without the help of the crab’s great wave. It was this action—the laziness of the man—that angered the Eldest Magician. As such, repetition of the word “lazy” makes the tone angry as it highlights what made the Eldest Magician angry.
for future "askers", I'm pretty positive that the answer is a.)emotions and ethics. It is in the lessons (I just read it)
Hope this helps.
