Answer:
Dr. Frankenstein decided to recreate life
Step-by-step explanation:
In a straightforward way of explaining that Dr. Frankenstein, an "evil genius" had a goal that he wasn't asked to recreate life or make his own monster which again he took this goal upon himself to make something that only mother nature can do. so in this case the "Monster was brought to life and treated as if they were never human and if they were dead they should have been left to rest in the piece so, of course, they were upset and in fact too upset that they would want to take revenge rightfully