Answer:
1st one: Motivation
2nd one: Imagery
3rd one: Symbol
Explanation:
1st one: Motivation is what drives someone to reach a goal of theirs. It gives them something to believe in and reach for, therefore it is the influence that drives this character.
2nd one: Imagery is used to describe something that the reader can imagine visually. Such as, "The rose was drowned in a soft pink shade." The reader will then imagine a pink rose such as the writer described.
3rd one: A symbol is used to represent something. It stands for a bigger idea the writer is trying to convey to the reader. Such as the example in the question the 'Dove' representing 'peace' is a good way to illustrate this.
