I think a would be the best answer for the preposition
Do you mean plagiarism? If you do then copying or stealing could be a synonym
Use of Personification helps in deep understanding of poem and make if interesting.
<u>Explanation:</u>
Personification means considering some object as a human. J.Patrick Lewis has used personification in his poem. Writing poems in this style makes it easily understandable. When we compare any object with human beings, it becomes easy to get a deep understanding of it.
J.Patrick Lewis writes a poem for children mostly. To enable children to get a deep understanding of the poem he is making more use of personification. This makes is poems more interesting. Like for example if it compares Sun's warmth with the arms of a loving mother.
Expressing the meaning of something by using different words which lead to better clarity