Personification because <span>the attribution of a personal nature or human characteristics to something nonhuman, or the representation of an abstract quality in human form.</span>
gregor is disappointed because he was very against the transformation
A - Samantha returned the book herself.
When using the active voice, the subject comes before the verb with the action (Samantha returned). Passive sentences have a noun with the action being done TO them (cake was made, buildings were built, coach was pushed)