The answer to the first one would be C. Onomatopoeia. Just for future reference, the definition of Onomatopoeia is the process of creating a word that imitates, resembles, or suggests the sound that it is describing. Here, the bridge made a 'boom' sound, so it is imitating/telling us the sound the bridge made.
The answer to the second one would be B. Hyperbole. He/she most likely doesn't literally have a million things to do, it's just an exaggeration, which is literally what a hyperbole is :)
